The hyperpigmentation treatment ladder

Every rung of the pigment ladder rests on the same foundation, and it isn't a serum: broad-spectrum sunscreen. In melasma specifically, a sunscreen protecting against visible light plus UV prevented relapses far better than a UV-only sunscreen in a randomized trial — because the light you're not blocking keeps re-triggering the pigment you're trying to fade [1]. Skip the base of the ladder and every rung above it underperforms. Get it right, and the treatments finally hold.

FAQ

What's the single most important step for hyperpigmentation?

Daily broad-spectrum sunscreen, ideally one that also protects against visible light (a tinted mineral formula for deeper tones). UV and visible light continuously re-stimulate pigment, so without photoprotection every other treatment is fighting a headwind — a randomized melasma trial found a visible-light-plus-UV sunscreen prevented relapses better than UV-only.

Do I need hydroquinone to fade dark spots?

Usually not as a first step. Gentler, well-evidenced options — azelaic acid, vitamin C, tranexamic acid, and an alpha arbutin plus kojic acid combination — can fade pigment, and one arbutin/kojic combo matched a prescription cream in a melasma trial. Hydroquinone is effective but used in supervised courses, so it sits at the top of the ladder, not the bottom.

Why isn't my brightening serum working on my acne marks?

Possibly because the marks are red, not brown. Red marks (post-inflammatory erythema) are blood vessels and don't respond to melanin-inhibiting serums; they fade with time, sun protection, and sometimes vascular laser. Brightening actives only work on brown marks (post-inflammatory hyperpigmentation) and melasma. Check whether your mark blanches under pressure before committing to a pigment serum.