From AHAs (alpha-hydroxy acids) and BHAs (beta-hydroxy acids) to the up-and-coming PHAs (polyhydroxy acids), acids have been taking over the beauty world for a while now, helping to resurface, clarify, and exfoliate the skin and imparting a fresh-out-of-facial glow.
But for the uninitiated, the idea of putting acids on your face can be daunting, and the world of acids can prove difficult to navigate. Thankfully, we’ve got Dr Dennis Gross to lead the way.

When it comes to acids, it’s difficult not to think of Dr Gross. The board-certified dermatologist is also the creator of the award-winning Dr Dennis Gross Skincare, which boasts a cult following for its Alpha Beta Daily Peels, a two-step home peel system with no down-time and highly raved results. Revolutionary for a time when peels were only available at clinics, Dr Dennis Gross Skincare remains the best-selling peel brand at Sephora today, counting celebrity fans like Chrissy Teigen, Kim Kardashian, Selena Gomez and more.
So is it really true that retinol can’t be used with acids? And are there skin types that are unsuitable for acids? We ask Dr Gross our burning questions.