Treating Acne During Testosterone Replacement Therapy

Why Acne Can Happen During TRT

Acne is one of the more common skin-related side effects that can occur during testosterone replacement therapy. It does not happen to every patient, but men starting TRT should know what to watch for and how to treat it early.

Testosterone can increase activity in the sebaceous glands, which produce oil in the skin. Some testosterone is also converted into dihydrotestosterone, or DHT, a more potent androgen in certain tissues. Higher androgen signaling can increase oil production, make pores more likely to clog, and create an environment where acne-related bacteria and inflammation can develop.

TRT-related acne often appears on the face, jawline, chest, shoulders, upper back, or scalp. Some patients notice only mild bumps or oily skin. Others develop deeper inflammatory acne, painful nodules, or cystic lesions. In testosterone-treated populations, acne often develops within the first several months after starting therapy, although timing can vary.

The goal is to treat acne early, prevent scarring, and adjust the hormone plan when needed without overreacting to mild symptoms.

TRT Acne is not Just a Skin Problem

Acne during TRT is partly dermatologic and partly hormonal. That means treatment should address both sides. A patient may need topical acne therapy, skin-care changes, oral medication, or dermatology referral, but the TRT regimen should also be reviewed.

Acne may be more likely when testosterone levels peak too high, when injections are dosed too far apart, when the dose is excessive for the patient, or when additional androgenic compounds are being used. Some men tolerate a given weekly dose better when it is divided into smaller, more frequent injections, which may reduce hormone peaks and side effects.

Avoid Systemic Antiandrogens

Many acne treatments used in women target androgen signaling systemically. These include spironolactone and combined oral contraceptives. They can be effective for hormonally driven acne in appropriate patients, but they are usually not appropriate for men who are using TRT and want to preserve the benefits of testosterone.

Systemic antiandrogens may block androgen receptors, reduce androgen activity, or lower free testosterone effects. That directly conflicts with the goals of testosterone therapy. For men who wish to continue TRT, acne management usually follows the standard acne treatment ladder: topical agents first, oral antibiotics when needed, topical androgen-targeted therapy such as clascoterone as an add-on option, and isotretinoin for severe or recalcitrant disease.

This approach treats the skin while preserving the intended systemic effects of TRT.

Early Signs of Acne to Watch For

TRT-related acne may begin with increased oiliness, clogged pores, blackheads, whiteheads, small red bumps, or tender pimples. The upper back and shoulders are common areas because these regions have many oil glands and can be affected by sweat, friction, tight clothing, and workout gear.

Patients should seek help earlier if acne is painful, spreading quickly, leaving dark marks, causing scarring, or forming deep nodules. Early treatment is easier than waiting until acne becomes cystic or widespread.

Clothing, Sweat, And Hygiene

TRT-related acne often affects the chest, shoulders, and upper back because these areas have many oil glands and are frequently exposed to sweat, friction, and tight clothing. Workout habits, clothing choice, and hygiene can make acne better or worse, especially in patients who train regularly.

Sweat itself does not directly cause acne, but sweat mixed with oil, dead skin cells, bacteria, sunscreen, body lotion, and friction can clog pores and irritate hair follicles. This is why acne may flare under tight shirts, compression gear, backpacks, shoulder straps, pads, helmets, or sweaty workout clothing.

Clothing choice can help. Patients prone to body acne should favor breathable, moisture-wicking fabrics during exercise and avoid staying in tight, sweaty clothing for long periods after training. Loose-fitting cotton or soft performance fabrics may be better tolerated during recovery time. Compression garments can be useful for sport, but they should be washed frequently and removed soon after workouts.

Showering after exercise is one of the simplest preventive steps. Patients should rinse sweat from the face, chest, shoulders, and back as soon as practical after training. A benzoyl peroxide wash can be used on acne-prone body areas several times per week or daily if tolerated, but it should be rinsed well and introduced gradually to avoid dryness or irritation.

Laundry habits also matter. Workout shirts, towels, pillowcases, hats, and sheets should be washed regularly. Reusing sweaty shirts or towels can re-expose the skin to oil, bacteria, and residue. Patients with back or shoulder acne should avoid heavy fragranced detergents, fabric softeners, or oily body products if these seem to worsen irritation.

Hair and beard products can also contribute to acne. Pomades, oils, thick conditioners, beard balms, and greasy styling products may clog pores along the forehead, temples, jawline, neck, chest, or upper back. Patients with TRT-related acne should choose non-comedogenic products when possible and rinse conditioner thoroughly from the shoulders and back.

The goal is not obsessive hygiene or harsh scrubbing. Overwashing and abrasive exfoliation can inflame the skin and worsen acne. The best routine is consistent, simple, and gentle: shower after sweating, change out of sweaty clothing, wash workout gear, avoid pore-clogging products, and use acne treatments regularly.

Skin Care Basics

A simple routine is usually best. A useful starting point is washing acne-prone areas once or twice daily with a gentle cleanser. Non-comedogenic moisturizers and sunscreens are preferred because they are less likely to clog pores. Patients should avoid heavy oils, greasy lotions, and thick fragranced products on the face, chest, shoulders, or back if these areas are acne-prone.

For men on TRT who train regularly, acne care should also include sweat management, breathable clothing, and consistent showering after workouts.

Topical Foundation: Retinoid Plus Benzoyl Peroxide

For mild to moderate acne, the foundation is usually a topical retinoid plus benzoyl peroxide. This combination targets several parts of acne development at once.

Topical retinoids, such as adapalene or tretinoin, help normalize skin cell turnover and reduce clogged pores. They are useful for blackheads, whiteheads, inflammatory acne, and prevention of new lesions. They work gradually and are often used as maintenance therapy after acne improves.

Benzoyl peroxide helps reduce acne-related bacteria and inflammation. It can be used as a wash, gel, cream, or leave-on product. For TRT-related chest, shoulder, and back acne, a benzoyl peroxide wash is often a practical starting point.

Patients should start slowly because both retinoids and benzoyl peroxide can cause dryness, peeling, redness, or irritation. Benzoyl peroxide can also bleach towels, sheets, and clothing. Lower strengths can still work and may be better tolerated.

A common approach is to use benzoyl peroxide in the morning or as a body wash, and a topical retinoid at night. Moisturizer and sunscreen help reduce irritation and improve adherence.

Topical Antibiotics

Topical antibiotics such as clindamycin can help inflammatory acne, especially when there are red bumps or pustules. They are commonly added when acne is more inflamed or not adequately controlled with benzoyl peroxide and a retinoid alone.

Topical antibiotics should not be used alone for long periods. They should generally be paired with benzoyl peroxide to improve effectiveness and reduce the risk of antibiotic resistance.

Winlevi: A Topical Antiandrogen Option

Winlevi is the brand name for clascoterone 1% cream. It is a topical androgen receptor inhibitor approved for acne vulgaris. This makes it especially interesting for acne that appears hormonally or androgen driven.

Clascoterone works locally in the skin by competing with androgens such as DHT at androgen receptors in sebaceous glands. This may reduce androgen-driven oil production and inflammation in the skin. Unlike systemic antiandrogens, clascoterone is designed to act topically and is rapidly metabolized. In clinical trials, it did not show the type of systemic antiandrogen effect that would be expected to counteract the goals of TRT.

That distinction matters. Winlevi may be a reasonable add-on option for men with TRT-associated acne because it targets androgen signaling in the skin without intentionally reducing systemic testosterone effects. It is not the same as taking spironolactone or other systemic androgen-blocking medication.

In two phase 3 randomized trials, twice-daily clascoterone improved acne treatment success and reduced lesion counts compared with vehicle cream, with mostly mild local skin reactions. The American Academy of Dermatology gives clascoterone a conditional recommendation for acne, partly because of cost and access considerations.

There is an important caveat: clascoterone has not been studied specifically in men using TRT for hypogonadism. Its use in this setting is based on mechanism, general acne data, and experience in testosterone-treated populations rather than direct TRT-specific trials.

Topical Dapsone and Azelaic Acid

Topical dapsone and azelaic acid may be useful adjuncts or alternatives in selected patients. They are not usually the core first-line combination for TRT acne, but they can be helpful when inflammation, irritation, post-inflammatory discoloration, or medication tolerance are concerns.

Azelaic acid may be useful for acne with redness, irritation, or dark marks after lesions. Dapsone may help inflammatory acne and is generally well tolerated. These treatments may be considered when benzoyl peroxide, retinoids, or topical antibiotics are not tolerated or are not enough.

When Oral Treatment is Needed

Some patients need more than topical treatment. Oral antibiotics such as doxycycline or minocycline may be considered for moderate inflammatory acne, especially when acne is widespread on the back, chest, or shoulders.

Oral antibiotics should usually be combined with topical benzoyl peroxide and a topical retinoid. They are generally used for a limited period, then tapered once acne is controlled. The goal is not indefinite antibiotic therapy. The goal is to calm inflammation while a durable topical maintenance plan is continued.

When oral antibiotics are used in a patient on TRT, clinicians may consider liver function monitoring depending on the medication, duration, baseline health, other medications, alcohol use, and clinical context. The hepatotoxicity concern is usually theoretical for many patients, but it is reasonable to monitor more carefully when multiple therapies are being used.

Isotretinoin for Severe or Scarring Acne

Oral isotretinoin is the most effective medication for severe acne. It is typically reserved for nodular acne, cystic acne, acne that is causing scars, or acne that has not responded to appropriate topical and oral therapy.

Patients on testosterone therapy can still be candidates for isotretinoin when clinically appropriate. Available experience in testosterone-treated patients, including individuals receiving masculinizing hormone therapy, suggests isotretinoin can be effective and generally well tolerated. Some patients may require longer treatment or careful relapse monitoring if the androgenic driver remains present.

Isotretinoin requires structured monitoring and is typically managed by dermatology. iPLEDGE requirements apply. Mood symptoms should be monitored, especially in patients with depression, anxiety, or significant distress from acne. Labs may include liver enzymes and lipids depending on the dermatologist’s protocol and patient risk factors.

For severe acne, isotretinoin should not be delayed too long. Preventing scars is easier than treating scars later.

What About Estradiol and Aromatase Inhibitors?

Estradiol balance matters in men, but aromatase inhibitors should not be used casually for acne. Over-suppressing estradiol can cause joint pain, low libido, mood changes, poor bone health, and other problems.

If estradiol is elevated and the patient has symptoms such as breast tenderness, fluid retention, mood changes, or libido changes, the first step is often to review testosterone dose, body composition, alcohol intake, sleep, and injection frequency. Aromatase inhibitors may be appropriate in selected patients, but they are not a routine acne treatment.

Blue Light Therapy

Blue light therapy may be considered as an adjunctive option for acne, especially for patients who want to reduce reliance on oral antibiotics or who have mild to moderate inflammatory acne despite a consistent topical routine. The most relevant acne wavelength range is usually 405 to 420 nm, sometimes described as violet-blue or blue light. This is different from ultraviolet tanning exposure and should be delivered through a skin-safe visible-light device.

The rationale is that acne-related bacteria produce porphyrins that absorb light in this range. When exposed to 405 to 420 nm light, these porphyrins can generate reactive oxygen species that reduce Cutibacterium acnes activity and may help calm inflammatory lesions. Blue light tends to be more useful for inflammatory bumps and pustules than for blackheads, deep cysts, scarring acne, or acne driven primarily by large hormonal peaks.

Blue light may be layered in as a supportive option when the acne is mild to moderate, inflammatory, and the patient is willing to use the device consistently. Patients should use eye protection, avoid UV-based devices or tanning beds, and be cautious if taking photosensitizing medications such as doxycycline or isotretinoin. Patients with darker skin types or a history of post-inflammatory hyperpigmentation should use device-based treatments carefully and ideally under clinician guidance.

What Patients Should Avoid

Patients should avoid picking or squeezing lesions, harsh scrubs, excessive exfoliation, tanning as treatment, and stacking multiple drying products without guidance.

Systemic antiandrogens such as spironolactone should generally be avoided in men who want to preserve TRT effects. Combined oral contraceptives are not relevant for cisgender men and also work partly through systemic hormonal effects that oppose androgen signaling.

Stopping TRT abruptly is usually not necessary for mild acne, but severe acne should prompt reassessment. The goal is to treat the acne and optimize the hormone plan safely.

A Practical Treatment Ladder

For mild acne, a good starting plan is usually a gentle cleanser, benzoyl peroxide wash or gel, topical retinoid, showering after workouts, and avoiding pore-clogging products. This should be paired with review of testosterone dose and injection timing.

For mild to moderate inflammatory acne, topical clindamycin can be added, but it should be paired with benzoyl peroxide. Winlevi may also be considered when acne appears androgen driven, especially when the goal is to avoid systemic antiandrogens.

For moderate inflammatory or truncal acne, oral doxycycline or minocycline may be considered for a limited period, combined with benzoyl peroxide and a topical retinoid. The TRT regimen should be checked to make sure levels are physiologic and not producing unnecessary peaks.

For severe cystic acne, scarring acne, or acne that does not respond to standard therapy, dermatology referral is appropriate. Isotretinoin may be the best option when acne is severe or scarring, while TRT dosing and other androgen exposures are reviewed carefully.

A Better Way to Manage TRT Acne

Acne during testosterone therapy is treatable. The best approach is early recognition, simple skin-care foundations, evidence-based topical therapy, and thoughtful hormone monitoring. Most patients do not need to stop TRT for mild acne, but they do need a plan.

Winlevi adds a useful option because it targets androgen signaling locally in the skin without the systemic antiandrogen effect that would conflict with TRT. It is not required for every patient, but it may be helpful when standard topicals are not enough or when acne appears strongly androgen driven.

At the Performance Medicine Institute, we take a comprehensive approach to TRT-related acne by combining lab-guided testosterone management, dose and injection schedule review, skin-care guidance, prescription acne therapy when appropriate, Winlevi or other topical options when clinically appropriate, and coordination with dermatology for more severe cases. Contact us to schedule an evaluation.

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