Azelaic acid 10% vs 20%: what the evidence does and does not transfer
A percentage on a label is not a clinical claim. The gap between cosmetic and prescription strength is where most of the confusion lives.
Azelaic acid is one of the most searched skincare ingredients in the markets this platform covers, and one of the most consistently misunderstood.…
How long does hyperpigmentation take to clear? What clinicians and consumers report
The honest answer is that it takes longer than most routines are built for — and consumer reports and clinical timelines are two different kinds of evidence.
Most people start a skincare routine for post-inflammatory hyperpigmentation expecting weeks. The timelines that come out of both the clinical…
What post-inflammatory hyperpigmentation is, and why melanin-rich skin is hit hardest
The dark mark left after acne, eczema or injury is a documented clinical pattern — and for darker skin tones it is disproportionately common.
Post-inflammatory hyperpigmentation (PIH) is the dark mark that remains after skin has been inflamed — by acne, eczema, an insect bite, a wound or a…