PHA

First came alpha hydroxy acids (AHAs), next was beta hydroxy acids (BHAs) and now, the newest member of the liquid exfoliant family is polyhydroxy acids, also known as PHAs.

More about PHA Polyhydroxy Acids

The gentle of the bunch, until recently it’s an ingredient that couldn’t be incorporated into many skincare formulas because they were patented by the two doctors who discovered them back in the mid-90s. But now they are free to be used, and that’s exactly why you’re suddenly seeing more and more products that incorporate them. Here, we’ve broken down what is PHA in skin care and why they’re such an underrated hero in the skincare sphere.