Melasma in Perimenopause: The Hormonal Pigmentation Nobody Warned You About

What melasma is, and how to recognise it

Larger, symmetrical, blurry-edged patches of brown or grey-brown pigment, typically on the cheeks, forehead, upper lip and jawline. The symmetry and the soft edges distinguish it from sun spots, which are discrete, well-defined and asymmetric.

It is chronic and relapsing. The realistic goal is control, not cure — and going in with that expectation prevents a great deal of frustration.

Why perimenopause triggers it

Melanocytes carry oestrogen and progesterone receptors. Hormonal fluctuation — not simply high or low levels, but instability — stimulates them to produce more pigment. Perimenopause is defined by exactly that instability, with oestrogen swinging erratically rather than declining smoothly.

Other contributors that stack on top:

• Cumulative sun exposure finally reaching a threshold
• Starting or changing hormone therapy or the combined pill
• Heat — including hot flushes, a genuinely underappreciated factor here
• Inflammation from irritating skincare, which is why over-treating melasma makes it worse
• Certain photosensitising medications

The thing most people get wrong: visible light

This is the single most useful piece of information in this article.

Melasma is driven by visible light as well as UV. Ordinary sunscreen — even excellent SPF 50 — blocks UV and does essentially nothing about visible light. Which means you can be religious about sunscreen and still watch your melasma worsen, and reasonably conclude that nothing works.

What blocks visible light is iron oxides, the pigments that make a sunscreen tinted. So for melasma specifically, a tinted mineral SPF is not a cosmetic preference — it is part of the treatment. That is why the Tinted CC Moisturizer SPF 55 and the SPF 50 Mineral Moisturizer are both tinted — the tint is doing therapeutic work, not just coverage.

Visible light also comes through windows and, to a small degree, from screens. If your melasma persists despite good sun habits, switch to tinted and give it three months.

Heat matters too

Melasma responds to heat independently of light. Saunas, hot yoga, standing over a stove — and hot flushes themselves. Managing hot flushes may therefore help your pigmentation, which is an unexpected but real connection and worth mentioning to your doctor.

What actually fades it

1. Tinted mineral SPF, daily, all year. Nothing else works without this. Reapply.
2. Azelaic acid. Excellent for melasma, well tolerated on reactive skin, and pregnancy-safe. If you use one active, a strong candidate.
3. Vitamin C. Tyrosinase inhibition plus antioxidant protection — the Brightening Vitamin C Serum in the morning.
4. Niacinamide. Blocks pigment transfer from melanocytes to skin cells. Gentle.
5. Kojic acid. Effective, and better tolerated than hydroquinone on sensitive skin — the Kojic Acid Brightening Cream.
6. Tranexamic acid, topical and — under specialist supervision — oral. Increasingly used with reasonable evidence.
7. Retinoids, introduced carefully. They help, but irritation causes pigment, so slow is essential. See Is Retinol Safe for Sensitive Skin?
8. Hydroquinone, still effective but prescription-managed in many places and needing supervision.

What makes it worse — and this list matters more than the one above

• Aggressive exfoliation. The most common self-inflicted mistake. Inflammation drives pigment production, so attacking melasma with strong acids reliably backfires — most of all on deeper skin tones.
• Untinted sunscreen alone.
• Heat exposure.
• Picking or rubbing the area.
• Aggressive laser. Melasma is notorious for rebounding worse after inappropriate laser. If you pursue in-clinic treatment, see someone with specific melasma experience and be sceptical of anyone promising quick clearance.
• Stopping treatment once it improves. It relapses. Maintenance is the whole game.

Realistic expectations

Twelve weeks minimum before judging anything. Meaningful improvement usually takes three to six months. It will likely return with summer, with hormonal change, or with a lapse in sun protection — that is the nature of the condition, not a failure of your routine.

Consider it a long-term management project, like rosacea. Framed that way it is far less demoralising.

Frequently Asked Questions

Why has melasma appeared in my forties without pregnancy?

Because melanocytes respond to hormonal instability, not just to pregnancy. Perimenopause produces exactly that instability, with oestrogen fluctuating erratically. Cumulative sun exposure reaching a threshold at the same age makes it more likely still.

Why is my melasma getting worse despite wearing sunscreen every day?

Almost certainly because your sunscreen is untinted. Melasma is driven by visible light as well as UV, and only iron oxides — the pigments that make a sunscreen tinted — block visible light. Switching to a tinted mineral SPF is the single highest-impact change you can make.

Can hot flushes make melasma worse?

Yes. Melasma responds to heat independently of light, and hot flushes are a repeated heat exposure to the face. It is one reason managing flushes may improve pigmentation, and worth raising with your doctor.

How long does melasma take to fade?

Twelve weeks before you judge anything, and three to six months for meaningful improvement. Anyone promising faster is either selling something or about to make it worse with an aggressive treatment.

Keep reading: What Actually Fades Dark Spots · HRT and Your Skin