When I first heard about using lactic acid for skin, I had a moment of confusion—isn't that what builds up in your muscles during a workout and causes soreness later? Turns out: more or less, yes! I ...

If I were to rifle through your current skincare lineup, I’d bet I’d find at least one of the following: salicylic acid, ...

In skincare products, exfoliating acids work by loosening the bonds between dead skin cells to support regular cell turnover, ...

In general, skin toner balances the skin and removes leftover makeup and dirt your cleanser might not have washed off. When used regularly, it could actually reduce the size of your pores (make them ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." We're here to tell you that lactic acid doesn't just cause sore muscles. In the skincare world, salicylic ...

Should you choose the deep-penetrating power of Glycolic Acid or the gentle, hydrating touch of Lactic Acid? Let’s break it down so you can exfoliate like a pro without fearing irritation or unwanted ...