They might sound scary, but skincare acids have skyrocketed in popularity over the last few years to become one of the most-used products in ... you use an effective BHA, then an AHA is not ...

While many similar products on the market also have a 2% BHA concentration, they don't always have the right pH balance. "Salicylic acid works best at a pH between 3 and 4," says Begoun.

Find out the difference once and for all. If your skincare routine is devoted to maintaining clear, glowing skin, exfoliation is likely already on your radar. And while there is no one-size-fits ...