Testosterone replacement therapy can cause acne, usually on the back, chest, shoulders, and sometimes the face, because higher androgen levels drive the skin's oil glands to produce more sebum. More oil combined with normal surface bacteria and dead skin cells clogs pores more easily, which is the same basic mechanism behind teenage acne during puberty. It's one of the most commonly reported side effects of TRT, and in most cases it's mild and manageable with the right skincare routine, dose adjustment, or a short course of dermatology treatment.
Why Does TRT Cause Acne?
Sebaceous glands, the oil-producing glands attached to hair follicles, are loaded with androgen receptors. When testosterone binds to those receptors, either directly or after being converted to the more potent androgen dihydrotestosterone (DHT), it stimulates the glands to enlarge and produce more sebum (Endocrine Society Clinical Practice Guideline, Testosterone Therapy in Men, 2018). Excess sebum, combined with skin cell turnover and the bacteria that naturally live in pores, creates the clogged follicles that show up as whiteheads, blackheads, and inflamed breakouts.
This is why acne shows up during puberty when androgen levels first rise, and why it can resurface in adult men starting TRT. The skin's oil glands are simply responding to a higher androgen signal than they were used to, particularly in the first several months before the body adjusts to a new baseline.
Who Is Most Likely to Get Acne on TRT?
- Men with a history of acne, especially teenage acne, since their sebaceous glands tend to be more androgen-sensitive
- Younger men, whose skin is generally more reactive to hormonal shifts
- Men on injections with large peaks and troughs, since a sharp rise in testosterone right after a shot can spike oil production more than a steady-state delivery method
- Men on higher doses, where circulating testosterone and DHT run well above what the skin is accustomed to
- Men using compounded or research-grade products with inconsistent dosing, which can produce unpredictable hormone spikes
Acne is well documented as a common, dose-related adverse effect across testosterone formulations, from injections to gels to pellets, though the reported rate varies by study and delivery method (Endocrine Society Clinical Practice Guideline, Testosterone Therapy in Men, 2018).
How to Manage TRT-Related Acne
Adjust the delivery method or dosing frequency. Smoothing out testosterone peaks, for example by moving from a large infrequent injection to smaller, more frequent doses, often reduces breakouts because the skin isn't exposed to sharp hormone spikes.
Ask about a dose reduction. If acne is significant and other symptoms are well controlled, a modest dose reduction can lower DHT and sebum production without giving up the benefits of therapy.
Use non-comedogenic skincare. A gentle cleanser with salicylic acid or benzoyl peroxide, used consistently on the back, chest, and face, helps control excess oil and unclog pores without over-drying the skin.
See a dermatologist for stubborn cases. Topical retinoids, oral antibiotics for inflammatory acne, or spironolactone are standard dermatology options, though spironolactone is typically avoided in men on TRT since it has anti-androgen effects. A dermatologist familiar with hormone therapy can tailor a plan that doesn't work against your treatment goals.
Give it time. Many men see acne improve after the first few months as the skin adjusts to a stable testosterone level, especially once dosing is smoothed out.
