
Dapsone, Azelaic Acid, Tranexamic Acid: Why Hydroquinone Is No Longer First-Line for SoC PIH
Hydroquinone has been the default first-line PIH treatment for thirty years. In 2026, three actives — dapsone, azelaic acid, tranexamic acid —…
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Hydroquinone has been the default first-line PIH treatment for thirty years. In 2026, three actives — dapsone, azelaic acid, tranexamic acid —…

Most published 'post-laser care' guides were written for Fitzpatrick I-III patients. SoC patients have a 90-day PIH risk window, not 14, and…

Benzoyl peroxide treats acne and causes hyperpigmentation in darker skin tones. The concentration that minimizes the trade-off has been known since 1986…

OTC marketing lumps melasma, PIH, and Hori's nevus together as 'dark spots.' The treatments aren't interchangeable, and getting the differential wrong is…

Tretinoin is the gold-standard retinoid for hyperpigmentation, and one of the more common iatrogenic causes of hyperpigmentation in darker skin tones. Both…