Testosterone replacement therapy (TRT) is the prescribed treatment for men with low testosterone levels. It has become a widespread treatment--as many as 11 million men were undergoing TRT in 2013, a number that has grown significantly since.
However, as with any treatment, there are a few adverse side effects of TRT. Thankfully, most are fairly minor. One of the most common is one you probably thought you wouldn't have to deal with once you passed your teenaged years. That's right, I'm talking about acne!
Testosterone and Acne: The Link
How does testosterone replacement therapy lead to the formation of zits? It may seem like a bit of a stretch, but it all comes down to one simple hormone: dihydrotestosterone, or DHT.
DHT is a hormone that is produced by your body from testosterone. It's actually five times more potent than testosterone, and it plays a vital role in your sexual development and health. When young men are going through puberty, their bodies produce a lot of DHT in order to encourage the growth of their reproductive organs.
But did you know that DHT also causes your body to produce more skin oils? This increase in skin oils causes the skin to become more oily, which means more oil may get into your pores. When the oil mixes with dead skin cells, the result is that thick white sebum that spurts out of your pimples every time you pop them. Oily skin is one of the primary causes of acne.
So, is it any surprise that TRT increases your risk of acne? TRT is basically flooding your body with testosterone, which is then converted to DHT. The potent hormone increases the production of skin oil, which in turn increases your risk of developing pimples. The P. acne bacteria already lives on your skin, speeding up the rate at which your skin cells die off. Mix the dead skin cells with the increase in skin oil, and you have a TRT-fueled recipe for acne.
If you've been on TRT for a few weeks and are noticing more pimples breaking out on your face, back, and chest (yes, the zits aren't confined to your face), it's a sign your body is turning the testosterone into DHT. While this is a good thing for your overall health, it may affect your appearance. Thankfully, there's plenty you can do to deal with the problem!
How to Deal With TRT-related Acne
Want to get rid of pimples or prevent your TRT treatment from causing an outbreak? Here are a few things you can try:
- Use Accutane -- Accutane, or isotretinoin, is one of the most potent prescription treatments to cure acne. It's usually used to treat cystic acne, which is a much more serious form of acne that is likely to cause scarring. The treatment is effective in up to 85% of cases. Taking 40 mg of Accutane every day for a week can do wonders for your acne. However, be aware that the medication does come with side effects, and it may lower testosterone levels. Consult your physician before mixing TRT and Accutane.
- Use Sporanox -- Sporanox, or itrconazole, is another useful medication to try as a means of curing your acne. It is an anti-fungal drug that may be able to kill off the P. acne bacteria that is increasing your skin cell turnover rate, thereby increasing your risk of clogged pores. Once again, check with your doctor before mixing TRT and Sporanox.
- Try Vitamin B5 -- Vitamin B5, or pantothenic acid, is needed by your body in order to produce CoEnzyme A (CoA). This enzyme helps to oxidize (burn) fatty acids, particularly in your skin. If you don't have enough of this CoA, your body won't be able to eliminate the fatty acids produced by an increase in DHT, so the skin oil will increase and lead to acne. By taking Vitamin B5, you give your body what it needs to keep the fatty acid production under control.
- Try anti-acne soap -- There are a number of anti-acne soaps available at every pharmacy and supermarket in the country. These soaps are often made with Benzoyl Peroxide or Salicylic acid, two highly effective anti-acne treatments. Ideally, you should shower after a heavy workout, and use the soap to wash your face and any body parts where there is an acne breakout. Topix Benzoyl Peroxide is a body wash worth trying.
- Try zinc -- Zinc is one of the most important minerals for a healthy body. It plays a vital role in many important internal functions, not the least of which is your body's immunity to disease. But how can it help to protect against acne? Zinc ensures that your bloodstream carries sufficient Vitamin A to your skin, and it helps to regulate the cellular apoptosis (death) of your skin cells. By ensuring that your skin cells die at a healthy rate, zinc essentially prevents the buildup of dead skin cells that soaks up skin oil to clog your pores.
- Get out -- Your body NEEDS sunlight in order to produce Vitamin D, one of the vitamins that play a role in fatty acid oxidation. However, be warned: too much sunlight can dry out your skin, causing it to produce even more oil. No more than 30 minutes of sunlight per day is needed to encourage healthy Vitamin D production.
If your acne is the result of the TRT, you may want to consider reducing the dose of testosterone. This can reduce the amount of DHT produced in your body, preventing acne. However, this is something you should discuss with your doctor. You can also discuss other useful treatments for dealing with TRT-related acne.
Compounded acne formulations from Empower Pharmacy:Dermatology | Empower Pharmacy
Top 6 FDA-Approved Acne Treatments You Should Try - ExcelMale
Acne and Testosterone
www.excelmale.com
A man finishes five months of isotretinoin. His back is clear for the first time in a year. Eight weeks later the pustules are back across his shoulders, and nothing about his skin care has changed. His testosterone cypionate hasn't changed either, and that is the whole story. This pattern comes up constantly on ExcelMale, and it has a clear explanation.
If you are still working out first-line treatment, start with our guide on why TRT causes acne and how to get rid of it without quitting testosterone. This article picks up where that one ends: what to do when acne on TRT returns after you thought you had beaten it.
Acne returns on TRT because every acne treatment works downstream of the androgen signal, and that signal continues for as long as you inject. Standard acne care assumes the trigger fades. A teenager finishes isotretinoin, his hormones settle, and remission often lasts for years. On TRT, your oil glands get the same androgen stimulus every week, indefinitely.
The process happens inside the skin. Your oil glands convert testosterone into dihydrotestosterone (DHT), a stronger androgen that binds the androgen receptor several times more tightly than testosterone does. Receptor activation raises oil output and changes its composition toward more triglycerides, less linoleic acid, and more oxidized squalene. That altered oil plugs the follicle and feeds Cutibacterium acnes, the bacterium behind inflammatory lesions.
Clear the skin and the gland starts rebuilding those conditions the next week. So the goal changes. You are not chasing a cure. You are running a maintenance plan, the same way you manage hematocrit.
Finasteride mainly blocks type 2 5-alpha-reductase, and your oil glands run mostly on type 1. Type 2 dominates in the prostate and scalp hair follicles. Finasteride lowers serum DHT, but DHT production inside the oil gland continues. Men who start it for acne usually take on the sexual side effect risk without the skin benefit.
Acne affects fewer than 1 in 10 men on standard TRT, but the rate rises with higher and longer androgen exposure. A 2026 scoping review in Sexual Medicine Reviews found acne in 0.6% to 9.1% of TRT trial participants, making it the most frequent skin side effect, with injectables producing more acne than oral or topical forms (Abou Chawareb et al., 2026).
Higher-exposure groups show what persistent androgen does over time. In a Kaiser Permanente cohort of 11,234 transmasculine people, acne risk in the first year after starting testosterone was 8.3 times higher than in matched cisgender men (Smith et al., 2026).
That risk stayed 5.3 times higher in the following years and never returned to baseline during five years of follow-up. This is the number TRT men should remember: the exposure does not wear off. Bodybuilders on supraphysiologic AAS stacks sit at the far end, with the highest rates of nodular and scarring acne.
Yes. Smaller, more frequent injections are the first protocol change to try for recurring TRT acne, ahead of any dose cut. A 200 mg shot every two weeks produces a sharp serum peak within a day or two, followed by a long slide. Those peaks drive bursts of oil production.
Splitting the same weekly amount into twice-weekly, every-other-day, or daily subcutaneous injections keeps levels flatter while your total exposure stays the same. We don't have a randomized trial comparing acne rates by injection frequency in TRT men. The support comes from pharmacokinetics and years of clinical experience, and it is consistent enough that most TRT-savvy prescribers try it first.
Cutting the dose also works, but it often brings back fatigue and low libido. Change frequency first. Reduce the dose only if that fails.
Both can. An aromatase inhibitor blocks the conversion of testosterone to estradiol, which leaves more free testosterone available for DHT conversion in the skin. If your breakouts started within weeks of adding anastrozole, the AI is a suspect.
hCG stimulates your testes to make testosterone on top of the injected dose, which adds androgen load. Lowering the hCG dose or spacing it out sometimes settles the skin while keeping its fertility benefit. Members in our TRT 100mg weekly body acne thread make a fair point here: get estradiol and free testosterone drawn at a consistent point in your injection cycle before you change anything.
Every standard dermatology treatment works on TRT acne except systemic anti-androgens, which defeat the purpose of TRT. The difference on TRT is sequencing: use stronger treatments to regain control, then step down to something you can use indefinitely.
The 2024 American Academy of Dermatology guideline supports topical retinoids, benzoyl peroxide, clascoterone, and isotretinoin, and recommends limiting oral antibiotic duration and pairing antibiotics with benzoyl peroxide (Reynolds et al., 2024).
Clascoterone is a topical androgen receptor blocker that acts in the skin and breaks down into an inactive compound, cortexolone, once it reaches the bloodstream. That design is why it does not lower serum testosterone or cause body-wide anti-androgen effects.
In two Phase 3 trials of 1,440 patients, 18.4% and 20.3% reached clear or almost clear skin at 12 weeks, compared with 9.0% and 6.5% on vehicle cream (Hebert et al., 2020). In the long-term extension, 48.9% of per-protocol patients had clear or almost clear facial skin by study end, and 52.4% for the trunk (Eichenfield et al., 2023).
Two caveats apply. About 62% of trial participants were female and the median age was 18, so we have no data in men on TRT specifically. And covering a full back and chest is a maximal-use scenario: in those safety studies, 5 of 69 patients showed temporary adrenal suppression on cortisol stimulation testing that resolved within four weeks of stopping. If you plan large-area use, tell your prescriber.
Low-dose isotretinoin makes sense when acne keeps returning after topical treatment and protocol changes, and you accept it as ongoing suppression rather than a cure. Doses of 5 to 10 mg a day (roughly 0.1 to 0.2 mg/kg) shrink the oil glands enough to hold acne down with fewer side effects than full dosing.
A 2026 meta-analysis of four randomized trials found that low-dose isotretinoin matched conventional dosing on 24-week acne scores, with better tolerability and higher patient satisfaction (Zou et al., 2026).
The catch is durability. A 2022 meta-analysis concluded that conventional-dose courses improve the odds of prolonged remission compared with low doses (Al Muqarrab and Almohssen, 2022). On TRT, prolonged remission after any course is unlikely anyway, so many men stay on a low dose for months or cycle it on and off.
Isotretinoin and testosterone can both raise triglycerides, lower HDL, and move liver enzymes. If you combine them, get a lipid panel and liver enzymes at baseline and every few months. Avoid oral 17-alpha-alkylated steroids completely during isotretinoin.
Yes, and supplements are the trigger most often missed, because men rarely mention them unless asked directly. High-dose vitamin B12 is the clearest example.
In a 2015 Science Translational Medicine study, B12 supplementation changed gene activity in C. acnes and increased its production of inflammatory porphyrins; one of 10 healthy volunteers developed acne within a week (Kang et al., 2015). Frequent high-dose B12 injections from "energy" clinics deserve a second look if your breakouts appeared suddenly and look uniform.
Whey protein is less clear-cut. A Jordanian case-control study of 201 gym-goers found that 47% of men with acne used whey, compared with 27.7% of men without acne (Muhaidat et al., 2024).
A 6-month randomized trial in men with mild to moderate acne found no difference in lesion counts between 30 g a day of whey and a non-whey supplement (Sompochpruetikul et al., 2024). If you suspect whey, six to eight weeks on a different protein source will answer the question for you.
Kelp and high-iodine products can cause pustular eruptions on the chest and face. "Muscle-building" supplements carry a bigger problem. In an analysis of FDA warnings from 2007 to 2016, 82 of 92 tainted muscle-building products (89.1%) contained synthetic steroids or steroid-like ingredients (Tucker et al., 2018). A man on TRT taking one of these may be adding an undisclosed androgen to his protocol.
Keep using a topical retinoid after your skin clears, because the retinoid prevents the microcomedones that every new pimple starts from. Most men stop treatment once the skin looks good. On TRT, that is when relapse begins.
A thin layer of adapalene or tretinoin at night, every night or a few nights a week once tolerated, is the maintenance dose. For back and chest acne, trifarotene has Phase 3 trial data on truncal acne specifically, which most retinoids lack (Tan et al., 2019). Members compare notes on it in our trifarotene thread.
Yes, as a wash on your back and chest, left on for a minute or two before rinsing, and stored somewhere cool. Independent testing detected benzene in 111 over-the-counter benzoyl peroxide products kept at room temperature, and high levels formed when a product was held at 50 °C; cold storage prevented it (Kucera et al., 2024). Don't leave it in a hot car or a gym bag.
Antibiotics don't touch the androgen signal, so acne returns when you stop, now with more resistant bacteria. The AAD guideline recommends limiting oral antibiotic courses and pairing them with benzoyl peroxide (Reynolds et al., 2024). Use them to break a flare, then go back to the retinoid.
Two habits round out the plan. Shower soon after training, because sweat and oil trapped under tight synthetic shirts favor truncal breakouts. And agree on an escalation path with your prescriber: if the retinoid and wash stop holding, add clascoterone or a short antibiotic course; if nodules or scarring appear, move to isotretinoin and recheck your injection schedule.
Early acne in the first 4 to 12 weeks often settles as levels stabilize. Acne that persists past six months, or returns after treatment, usually needs maintenance for as long as you stay on testosterone.
Yes. Many men do, with lipid and liver enzyme monitoring. Expect acne to return after the course ends if TRT continues, which is why low-dose maintenance is common.
No. It acts on androgen receptors in the skin and breaks down into an inactive compound in the blood, so serum testosterone and DHT stayed unchanged in trials.
Rarely. A change in injection frequency plus a retinoid-based routine controls most cases. Stopping TRT brings back low-testosterone symptoms, and acne returns when you restart.
The drugs are the same, but body acne responds best to benzoyl peroxide washes and a retinoid with truncal data such as trifarotene. Treating a whole back takes more product, which matters for clascoterone's large-area limits.
One pattern stands out in long ExcelMale threads on this topic. The men whose acne stays controlled for years usually changed their injection schedule and kept a retinoid by the bathroom sink. The men still fighting it tend to cycle through antibiotics and isotretinoin courses while injecting 200 mg every 10 to 14 days. The drug you pick matters less than how steady the hormone signal is underneath it.
For first-line options, read why TRT causes acne and how to treat it without quitting testosterone, and see how members handled persistent back acne in the TRT 100mg weekly body acne thread.
By Nelson Vergel | B.S. Chemical Engineering, MBA | Founder, ExcelMale.com | 34+ years on TRT | NIH and FDA advisory panel service | Author: Testosterone: A Man's Guide, Beyond Testosterone, The hCG Advantage, and From Pills to Implants. Updated October 2026.
About ExcelMale: ExcelMale.com is a men's health community founded by Nelson Vergel, with more than 24,000 members and over 20 years of archives covering testosterone replacement, hormone optimization, fertility, and men's sexual health.
However, as with any treatment, there are a few adverse side effects of TRT. Thankfully, most are fairly minor. One of the most common is one you probably thought you wouldn't have to deal with once you passed your teenaged years. That's right, I'm talking about acne!
Testosterone and Acne: The Link
How does testosterone replacement therapy lead to the formation of zits? It may seem like a bit of a stretch, but it all comes down to one simple hormone: dihydrotestosterone, or DHT.
DHT is a hormone that is produced by your body from testosterone. It's actually five times more potent than testosterone, and it plays a vital role in your sexual development and health. When young men are going through puberty, their bodies produce a lot of DHT in order to encourage the growth of their reproductive organs.
But did you know that DHT also causes your body to produce more skin oils? This increase in skin oils causes the skin to become more oily, which means more oil may get into your pores. When the oil mixes with dead skin cells, the result is that thick white sebum that spurts out of your pimples every time you pop them. Oily skin is one of the primary causes of acne.
So, is it any surprise that TRT increases your risk of acne? TRT is basically flooding your body with testosterone, which is then converted to DHT. The potent hormone increases the production of skin oil, which in turn increases your risk of developing pimples. The P. acne bacteria already lives on your skin, speeding up the rate at which your skin cells die off. Mix the dead skin cells with the increase in skin oil, and you have a TRT-fueled recipe for acne.
If you've been on TRT for a few weeks and are noticing more pimples breaking out on your face, back, and chest (yes, the zits aren't confined to your face), it's a sign your body is turning the testosterone into DHT. While this is a good thing for your overall health, it may affect your appearance. Thankfully, there's plenty you can do to deal with the problem!
How to Deal With TRT-related Acne
Want to get rid of pimples or prevent your TRT treatment from causing an outbreak? Here are a few things you can try:
- Use Accutane -- Accutane, or isotretinoin, is one of the most potent prescription treatments to cure acne. It's usually used to treat cystic acne, which is a much more serious form of acne that is likely to cause scarring. The treatment is effective in up to 85% of cases. Taking 40 mg of Accutane every day for a week can do wonders for your acne. However, be aware that the medication does come with side effects, and it may lower testosterone levels. Consult your physician before mixing TRT and Accutane.
- Use Sporanox -- Sporanox, or itrconazole, is another useful medication to try as a means of curing your acne. It is an anti-fungal drug that may be able to kill off the P. acne bacteria that is increasing your skin cell turnover rate, thereby increasing your risk of clogged pores. Once again, check with your doctor before mixing TRT and Sporanox.
- Try Vitamin B5 -- Vitamin B5, or pantothenic acid, is needed by your body in order to produce CoEnzyme A (CoA). This enzyme helps to oxidize (burn) fatty acids, particularly in your skin. If you don't have enough of this CoA, your body won't be able to eliminate the fatty acids produced by an increase in DHT, so the skin oil will increase and lead to acne. By taking Vitamin B5, you give your body what it needs to keep the fatty acid production under control.
- Try anti-acne soap -- There are a number of anti-acne soaps available at every pharmacy and supermarket in the country. These soaps are often made with Benzoyl Peroxide or Salicylic acid, two highly effective anti-acne treatments. Ideally, you should shower after a heavy workout, and use the soap to wash your face and any body parts where there is an acne breakout. Topix Benzoyl Peroxide is a body wash worth trying.
- Try zinc -- Zinc is one of the most important minerals for a healthy body. It plays a vital role in many important internal functions, not the least of which is your body's immunity to disease. But how can it help to protect against acne? Zinc ensures that your bloodstream carries sufficient Vitamin A to your skin, and it helps to regulate the cellular apoptosis (death) of your skin cells. By ensuring that your skin cells die at a healthy rate, zinc essentially prevents the buildup of dead skin cells that soaks up skin oil to clog your pores.
- Get out -- Your body NEEDS sunlight in order to produce Vitamin D, one of the vitamins that play a role in fatty acid oxidation. However, be warned: too much sunlight can dry out your skin, causing it to produce even more oil. No more than 30 minutes of sunlight per day is needed to encourage healthy Vitamin D production.
If your acne is the result of the TRT, you may want to consider reducing the dose of testosterone. This can reduce the amount of DHT produced in your body, preventing acne. However, this is something you should discuss with your doctor. You can also discuss other useful treatments for dealing with TRT-related acne.
Compounded acne formulations from Empower Pharmacy:Dermatology | Empower Pharmacy
Top 6 FDA-Approved Acne Treatments You Should Try - ExcelMale
Acne and Testosterone
How to treat or prevent acne caused by testosterone.
These are the best posts on acne and testosterone. acne increase on T Acne on back [Archive] - ExcelMale.com TRT, hCG,AI, Health Forums Thread: Testosterone Side Effect Management Table acne increase on T - Page 2 Acne [Archive] - ExcelMale.com TRT, hCG,AI, Health Forums Terrible chest...
www.excelmale.com
A man finishes five months of isotretinoin. His back is clear for the first time in a year. Eight weeks later the pustules are back across his shoulders, and nothing about his skin care has changed. His testosterone cypionate hasn't changed either, and that is the whole story. This pattern comes up constantly on ExcelMale, and it has a clear explanation.
If you are still working out first-line treatment, start with our guide on why TRT causes acne and how to get rid of it without quitting testosterone. This article picks up where that one ends: what to do when acne on TRT returns after you thought you had beaten it.
Why Does Acne Keep Coming Back When You Stay on Testosterone?
Acne returns on TRT because every acne treatment works downstream of the androgen signal, and that signal continues for as long as you inject. Standard acne care assumes the trigger fades. A teenager finishes isotretinoin, his hormones settle, and remission often lasts for years. On TRT, your oil glands get the same androgen stimulus every week, indefinitely.
The process happens inside the skin. Your oil glands convert testosterone into dihydrotestosterone (DHT), a stronger androgen that binds the androgen receptor several times more tightly than testosterone does. Receptor activation raises oil output and changes its composition toward more triglycerides, less linoleic acid, and more oxidized squalene. That altered oil plugs the follicle and feeds Cutibacterium acnes, the bacterium behind inflammatory lesions.
Clear the skin and the gland starts rebuilding those conditions the next week. So the goal changes. You are not chasing a cure. You are running a maintenance plan, the same way you manage hematocrit.
Why Doesn't Finasteride Clear TRT Acne?
Finasteride mainly blocks type 2 5-alpha-reductase, and your oil glands run mostly on type 1. Type 2 dominates in the prostate and scalp hair follicles. Finasteride lowers serum DHT, but DHT production inside the oil gland continues. Men who start it for acne usually take on the sexual side effect risk without the skin benefit.
How Common Is Acne on TRT Compared With Other Androgen Users?
Acne affects fewer than 1 in 10 men on standard TRT, but the rate rises with higher and longer androgen exposure. A 2026 scoping review in Sexual Medicine Reviews found acne in 0.6% to 9.1% of TRT trial participants, making it the most frequent skin side effect, with injectables producing more acne than oral or topical forms (Abou Chawareb et al., 2026).
Higher-exposure groups show what persistent androgen does over time. In a Kaiser Permanente cohort of 11,234 transmasculine people, acne risk in the first year after starting testosterone was 8.3 times higher than in matched cisgender men (Smith et al., 2026).
That risk stayed 5.3 times higher in the following years and never returned to baseline during five years of follow-up. This is the number TRT men should remember: the exposure does not wear off. Bodybuilders on supraphysiologic AAS stacks sit at the far end, with the highest rates of nodular and scarring acne.
Does Injection Frequency Change How Often Acne Comes Back?
Yes. Smaller, more frequent injections are the first protocol change to try for recurring TRT acne, ahead of any dose cut. A 200 mg shot every two weeks produces a sharp serum peak within a day or two, followed by a long slide. Those peaks drive bursts of oil production.
Splitting the same weekly amount into twice-weekly, every-other-day, or daily subcutaneous injections keeps levels flatter while your total exposure stays the same. We don't have a randomized trial comparing acne rates by injection frequency in TRT men. The support comes from pharmacokinetics and years of clinical experience, and it is consistent enough that most TRT-savvy prescribers try it first.
Cutting the dose also works, but it often brings back fatigue and low libido. Change frequency first. Reduce the dose only if that fails.
Can an Aromatase Inhibitor or hCG Make Acne Worse?
Both can. An aromatase inhibitor blocks the conversion of testosterone to estradiol, which leaves more free testosterone available for DHT conversion in the skin. If your breakouts started within weeks of adding anastrozole, the AI is a suspect.
hCG stimulates your testes to make testosterone on top of the injected dose, which adds androgen load. Lowering the hCG dose or spacing it out sometimes settles the skin while keeping its fertility benefit. Members in our TRT 100mg weekly body acne thread make a fair point here: get estradiol and free testosterone drawn at a consistent point in your injection cycle before you change anything.
Which Acne Treatments Work Without Lowering Your Testosterone?
Every standard dermatology treatment works on TRT acne except systemic anti-androgens, which defeat the purpose of TRT. The difference on TRT is sequencing: use stronger treatments to regain control, then step down to something you can use indefinitely.
The 2024 American Academy of Dermatology guideline supports topical retinoids, benzoyl peroxide, clascoterone, and isotretinoin, and recommends limiting oral antibiotic duration and pairing antibiotics with benzoyl peroxide (Reynolds et al., 2024).
| Treatment | How it works | Effect on your testosterone | Best role on TRT | Main limits |
|---|---|---|---|---|
| Topical retinoid (adapalene, tretinoin, trifarotene) | Normalizes follicle turnover, prevents clogged pores | None | Nightly long-term maintenance | Dryness and irritation in the first weeks |
| Benzoyl peroxide wash (2.5% to 5%) | Kills C. acnes with no known resistance | None | Back and chest; partner for any antibiotic | Bleaches fabric; store cool |
| Clascoterone 1% cream (Winlevi) | Blocks androgen receptors in the skin | None measured | Add-on when oil and inflammation persist | Cost; caution with large-area use |
| Topical minocycline 4% foam | Topical antibiotic | None | Short-term inflammatory flares | Antibiotic stewardship |
| Oral sarecycline or doxycycline | Oral antibiotic | None | Flares, under 3 months, always with BPO | Resistance; gut effects |
| Low-dose isotretinoin (5 to 10 mg/day) | Shrinks oil glands | None on serum T | Recurrent moderate to severe acne | Lipids, liver enzymes, dryness; relapse after stopping |
| Full-dose isotretinoin | Shrinks oil glands | None on serum T | Nodular or scarring acne | Higher side effect burden |
| Oral spironolactone | Body-wide androgen receptor blocker | Blocks androgen effects everywhere | Not for men on TRT | Gynecomastia, ED |
| Finasteride | Blocks type 2 5-alpha-reductase | Lowers serum DHT | Not an acne treatment | Misses type 1 in skin; sexual side effects |
What Is Clascoterone and Is It Safe for Men on TRT?
Clascoterone is a topical androgen receptor blocker that acts in the skin and breaks down into an inactive compound, cortexolone, once it reaches the bloodstream. That design is why it does not lower serum testosterone or cause body-wide anti-androgen effects.
In two Phase 3 trials of 1,440 patients, 18.4% and 20.3% reached clear or almost clear skin at 12 weeks, compared with 9.0% and 6.5% on vehicle cream (Hebert et al., 2020). In the long-term extension, 48.9% of per-protocol patients had clear or almost clear facial skin by study end, and 52.4% for the trunk (Eichenfield et al., 2023).
Two caveats apply. About 62% of trial participants were female and the median age was 18, so we have no data in men on TRT specifically. And covering a full back and chest is a maximal-use scenario: in those safety studies, 5 of 69 patients showed temporary adrenal suppression on cortisol stimulation testing that resolved within four weeks of stopping. If you plan large-area use, tell your prescriber.
When Does Low-Dose Isotretinoin Make Sense on TRT?
Low-dose isotretinoin makes sense when acne keeps returning after topical treatment and protocol changes, and you accept it as ongoing suppression rather than a cure. Doses of 5 to 10 mg a day (roughly 0.1 to 0.2 mg/kg) shrink the oil glands enough to hold acne down with fewer side effects than full dosing.
A 2026 meta-analysis of four randomized trials found that low-dose isotretinoin matched conventional dosing on 24-week acne scores, with better tolerability and higher patient satisfaction (Zou et al., 2026).
The catch is durability. A 2022 meta-analysis concluded that conventional-dose courses improve the odds of prolonged remission compared with low doses (Al Muqarrab and Almohssen, 2022). On TRT, prolonged remission after any course is unlikely anyway, so many men stay on a low dose for months or cycle it on and off.
Isotretinoin and testosterone can both raise triglycerides, lower HDL, and move liver enzymes. If you combine them, get a lipid panel and liver enzymes at baseline and every few months. Avoid oral 17-alpha-alkylated steroids completely during isotretinoin.
Can Your Supplements Be Causing Your Acne?
Yes, and supplements are the trigger most often missed, because men rarely mention them unless asked directly. High-dose vitamin B12 is the clearest example.
In a 2015 Science Translational Medicine study, B12 supplementation changed gene activity in C. acnes and increased its production of inflammatory porphyrins; one of 10 healthy volunteers developed acne within a week (Kang et al., 2015). Frequent high-dose B12 injections from "energy" clinics deserve a second look if your breakouts appeared suddenly and look uniform.
Whey protein is less clear-cut. A Jordanian case-control study of 201 gym-goers found that 47% of men with acne used whey, compared with 27.7% of men without acne (Muhaidat et al., 2024).
A 6-month randomized trial in men with mild to moderate acne found no difference in lesion counts between 30 g a day of whey and a non-whey supplement (Sompochpruetikul et al., 2024). If you suspect whey, six to eight weeks on a different protein source will answer the question for you.
Kelp and high-iodine products can cause pustular eruptions on the chest and face. "Muscle-building" supplements carry a bigger problem. In an analysis of FDA warnings from 2007 to 2016, 82 of 92 tainted muscle-building products (89.1%) contained synthetic steroids or steroid-like ingredients (Tucker et al., 2018). A man on TRT taking one of these may be adding an undisclosed androgen to his protocol.
How Do You Keep Acne From Relapsing Long Term on TRT?
Keep using a topical retinoid after your skin clears, because the retinoid prevents the microcomedones that every new pimple starts from. Most men stop treatment once the skin looks good. On TRT, that is when relapse begins.
A thin layer of adapalene or tretinoin at night, every night or a few nights a week once tolerated, is the maintenance dose. For back and chest acne, trifarotene has Phase 3 trial data on truncal acne specifically, which most retinoids lack (Tan et al., 2019). Members compare notes on it in our trifarotene thread.
Should You Keep Using Benzoyl Peroxide for Maintenance?
Yes, as a wash on your back and chest, left on for a minute or two before rinsing, and stored somewhere cool. Independent testing detected benzene in 111 over-the-counter benzoyl peroxide products kept at room temperature, and high levels formed when a product was held at 50 °C; cold storage prevented it (Kucera et al., 2024). Don't leave it in a hot car or a gym bag.
Why Shouldn't Antibiotics Be Your Maintenance Plan?
Antibiotics don't touch the androgen signal, so acne returns when you stop, now with more resistant bacteria. The AAD guideline recommends limiting oral antibiotic courses and pairing them with benzoyl peroxide (Reynolds et al., 2024). Use them to break a flare, then go back to the retinoid.
Two habits round out the plan. Shower soon after training, because sweat and oil trapped under tight synthetic shirts favor truncal breakouts. And agree on an escalation path with your prescriber: if the retinoid and wash stop holding, add clascoterone or a short antibiotic course; if nodules or scarring appear, move to isotretinoin and recheck your injection schedule.
Frequently Asked Questions
Will TRT acne eventually go away on its own?
Early acne in the first 4 to 12 weeks often settles as levels stabilize. Acne that persists past six months, or returns after treatment, usually needs maintenance for as long as you stay on testosterone.
Can I take isotretinoin while on TRT?
Yes. Many men do, with lipid and liver enzyme monitoring. Expect acne to return after the course ends if TRT continues, which is why low-dose maintenance is common.
Does clascoterone lower testosterone?
No. It acts on androgen receptors in the skin and breaks down into an inactive compound in the blood, so serum testosterone and DHT stayed unchanged in trials.
Should I stop TRT to clear my acne?
Rarely. A change in injection frequency plus a retinoid-based routine controls most cases. Stopping TRT brings back low-testosterone symptoms, and acne returns when you restart.
Is back acne on TRT treated differently from facial acne?
The drugs are the same, but body acne responds best to benzoyl peroxide washes and a retinoid with truncal data such as trifarotene. Treating a whole back takes more product, which matters for clascoterone's large-area limits.
Related ExcelMale Forum Discussions
- Why Does TRT Cause Acne, and How Do You Get Rid of It Without Quitting Testosterone?: our first-line treatment guide for new TRT acne.
- TRT 100mg Weekly: Body Acne: members weigh lab timing before protocol changes and spot treatment over full-body products.
- How to Treat Acne Caused by Testosterone Therapy: an early community thread on washes, over-the-counter adapalene, and diet.
- Testosterone and Acne: What You Need to Know: background on how testosterone affects oil glands.
- The Future of Acne Treatment: Trifarotene Insights: discussion of the RAR-gamma selective retinoid for chest and back acne.
- TRT Side Effect Management forum: the hub for estradiol, hematocrit, acne, and other side effect threads.
Key References
- Abou Chawareb E, et al. Dermatological adverse effects of testosterone replacement therapy: a scoping review of the literature. Sexual Medicine Reviews. 2026. https://doi.org/10.1093/sxmrev/qeaf061
- Smith CA, et al. Acne incidence and severity in transgender individuals. JAMA Dermatology. 2026;162(3):255-263. https://doi.org/10.1001/jamadermatol.2025.5597
- Hebert A, et al. Efficacy and safety of topical clascoterone cream, 1%, for treatment in patients with facial acne: two phase 3 randomized clinical trials. JAMA Dermatology. 2020;156(6):621-630. https://doi.org/10.1001/jamadermatol.2020.0465
- Eichenfield LF, et al. Long-term safety and efficacy of twice-daily topical clascoterone cream 1% in patients 12 years of age or older with acne vulgaris. Journal of Drugs in Dermatology. 2023;22(8):810-816. Long-Term Safety and Efficacy of Twice-Daily Topical Clascoterone Cream 1% in Patients Greater Than or Equal to 12 Years of Age With Acne Vulgaris - JDDonline - Journal of Drugs in Dermatology
- Reynolds RV, et al. Guidelines of care for the management of acne vulgaris. Journal of the American Academy of Dermatology. 2024;90(5):1006.e1-1006.e30. Redirecting
- Zou J, et al. Individualizing isotretinoin dosing in acne: comparable 24-week efficacy and better tolerability at lower daily doses. Frontiers in Medicine. 2026;13:1771320. Frontiers | Individualizing isotretinoin dosing in acne: comparable 24-week efficacy and better tolerability at lower daily doses
- Al Muqarrab F, Almohssen A. Low-dose oral isotretinoin for the treatment of adult patients with mild-to-moderate acne vulgaris: systematic review and meta-analysis. Dermatologic Therapy. 2022;35(4):e15311. https://doi.org/10.1111/dth.15311
- Tan J, et al. Randomized phase 3 evaluation of trifarotene 50 μg/g cream treatment of moderate facial and truncal acne. Journal of the American Academy of Dermatology. 2019;80(6):1691-1699. Redirecting
- Kucera K, et al. Evaluation of benzene presence and formation in benzoyl peroxide drug products. Journal of Investigative Dermatology. 2025;145(5):1147-1154. Redirecting
- Sompochpruetikul K, et al. Whey protein and male acne: a double-blind, randomized controlled trial. Journal of Dermatology. 2024;51(7):1022-1025. https://doi.org/10.1111/1346-8138.17109
Conclusion
One pattern stands out in long ExcelMale threads on this topic. The men whose acne stays controlled for years usually changed their injection schedule and kept a retinoid by the bathroom sink. The men still fighting it tend to cycle through antibiotics and isotretinoin courses while injecting 200 mg every 10 to 14 days. The drug you pick matters less than how steady the hormone signal is underneath it.
For first-line options, read why TRT causes acne and how to treat it without quitting testosterone, and see how members handled persistent back acne in the TRT 100mg weekly body acne thread.
By Nelson Vergel | B.S. Chemical Engineering, MBA | Founder, ExcelMale.com | 34+ years on TRT | NIH and FDA advisory panel service | Author: Testosterone: A Man's Guide, Beyond Testosterone, The hCG Advantage, and From Pills to Implants. Updated October 2026.
About ExcelMale: ExcelMale.com is a men's health community founded by Nelson Vergel, with more than 24,000 members and over 20 years of archives covering testosterone replacement, hormone optimization, fertility, and men's sexual health.
Last edited by a moderator:
