How hormone therapy changes your skin, and how to care for it at every stage

Hormones reach skin fast. Sebaceous glands and hair follicles are directly hormone-responsive, so skin often registers a change before anything else does.

That is worth knowing in advance rather than discovering. Almost everything below follows a schedule, and a plan made at month zero works considerably better than one assembled at month eight in response to a problem.

What testosterone does

Testosterone increases sebum production, and acne follows. In a study of 988 transmasculine patients, 29.6 percent of those aged 18 to 21 developed acne over two years of testosterone therapy.¹

The timing is the useful part. Acne is most prevalent between 6 and 12 months of therapy.¹ That is a window, not a permanent state, and knowing where it sits changes how you approach it. Starting treatment at month seven because things have become distressing is a slower path than having something in place at month three.

The distribution is characteristic too: the lower third of the face, chest, upper arms and back.¹ Back and chest involvement catches people out, partly because it is harder to see and partly because facial routines do not reach it.

Testosterone also drives facial, chest and abdominal hair growth, which is usually the point.¹ Less welcome for some is androgenic scalp hair loss, which can begin in young adulthood and is treatable, including with 5-alpha-reductase inhibitors.¹ Worth raising early, because hair is easier to keep than to recover.

The isotretinoin question, and why timing matters

For acne that is scarring, severe, unresponsive to other treatment, or causing real distress, isotretinoin is appropriate.¹ It works, and for the right patient it is the correct answer rather than a last resort.

One detail deserves more attention than it usually gets: isotretinoin can delay wound healing for up to a year after it is stopped.¹

If gender-affirming surgery is anywhere in your plans, that changes the sequencing. It is a conversation to have with whoever manages your care before starting, not after a surgical date is set. This is a coordination problem more than a clinical one, and it is exactly the kind of thing that falls through when nobody is looking at the whole picture.

What estrogen and antiandrogens do

The direction reverses. Estrogen therapy and spironolactone reduce sebum and decrease acne in transfeminine adults.¹ For anyone who has spent years with oily skin, that is welcome.

What frequently follows is dryness, and a barrier that behaves differently than it used to. Less sebum means less of the lipid film that holds water in the skin. Routines built for oily skin, foaming cleansers, astringents, frequent exfoliation, become actively counterproductive on the same face a year later.

This is one of the more common things I expect to see: someone still running the routine their skin needed before, on skin that no longer needs it, and reading the resulting tightness and sensitivity as a new problem rather than an old habit. The fix is usually subtraction, plus proper barrier support.

The hair that does not go away

Here is the number that reframes this whole area: 84 percent of transgender women receiving estrogen still report persistent unwanted facial and body hair.¹

Hormones soften and slow terminal hair. They do not eliminate it. So for most transfeminine people, hair removal is not an optional aesthetic extra; it is a core part of the care, and it is a longer project than most people are told.

There are two tools, and they are complementary rather than competing.

Laser targets pigment in the hair, which makes it fast over large areas, with sessions spaced four to eight weeks apart. It is also generally ineffective on thin, light, red, blonde or grey hairs, because there is not enough pigment to absorb the energy.²

Electrolysis destroys follicles individually with an electrical current, so it works on every hair color. The cost is time: weekly sessions, roughly an hour each.²

Both achieve roughly 85 to 90 percent reduction, and sustained results often require ongoing treatment.² In practice the combination works best: laser for the dense pigmented hair, electrolysis for what laser cannot see.²

Why wavelength matters here specifically

This is where the general advice stops being general.

For darker skin, laser options are restricted. The published gender-affirming care guidance is direct about it: only 1064 nm Nd:YAG is considered safe for Fitzpatrick types V and VI.²

That is not a preference, it is a constraint, and it means a transfeminine person with deep skin has a genuinely narrow set of appropriate providers. Many practices offering laser hair removal cannot safely treat her, and not all of them know it. The reasoning behind that wavelength, and why the alternatives cause harm in pigmented skin, is a subject of its own.

If you are at the intersection of these two things, being trans and having deeper skin, you have probably already found that the available options narrow sharply. It is worth asking any provider directly which wavelength they run before booking anything.

How care should be sequenced

Skin changes on hormone therapy are predictable enough to plan around, and the plan is better made early.

Before or at the start, establish a baseline and set expectations for what is coming, including the acne window on testosterone and the dryness that tends to follow estrogen. If surgery is on the horizon, isotretinoin timing goes into that conversation from the beginning.

Through the first year, expect to adjust. The routine that suits month two will not suit month ten in either direction, and treating that as a failure rather than as the expected course leads people to abandon things that were working.

For hair removal, start earlier than feels necessary. It is measured in months to years, and beginning it while other things are still settling is usually the right call rather than a premature one.