You know AHA’s but have you met any PHA’s yet? If you haven’t you will. Polyhydroxy acids were first discovered, researched and patented by Neostrata, the inventors of the gylcolic peel (literally) and one of my favorite brands.
But, as all good things come to an end, their patent ran out- and lots of beauty brands are now incorporating PHA’s into their products. I spoke with the lovely Sara Spruch-Feiner for a story she was doing on PHA’s. Check it out here!
