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 ...

And it’s not just for the face, either. As one of the gentler chemical exfoliators, lactic acid is also great for the ...

Everything you need to know about lactic acid—the alpha hydroxy acid that'll change your skin for the better. With so many skincare ingredients flooding our consciousness and our online carts, keeping ...

Between all the different acids, hydrators, peptides, and other clinical ingredient names that sound like something you ...

Whether it's the new phenomenon of maskne or a long-standing relationship with breakouts, acne is simply a part of many people's skin care lives, and that's okay. But if you do want to get rid of the ...

Most of The Ordinary's products feature one hero ingredient without any additives or fragrances. (That's how they manage to keep all products so affordable—most are under $15—yes, you read that ...