PHAs, or polyhydroxy acids, are a much gentler exfoliating alternative to AHAs and BHAs. PHAs have a much larger molecular weight which makes it harder for them to penetrate the skin as deeply as their smaller, lighter counterparts, so they’re less likely to cause irritation. PHAs are also known to attract moisture
Benefits: PHAs smooth skin and improve overall tone while also hydrating.
Skin Types: Dry and sensitive skin types will love the gentle exfoliation PHAs provide.