PHA vs. AHA vs. BHA: Which Exfoliating Acid Is Actually Gentlest for Sensitive Skin
Most people pick an exfoliating acid off the shelf based on which one is trending, then wonder why their “gentle” new serum leaves their face red and tight. The three major acid families — AHAs, BHAs, and PHAs — aren’t interchangeable versions of the same thing. They differ at the molecular level in ways that […]