A toner typically either hydrates or exfoliates ... It’s made with a blend of AHAs — including azelaic acid, glycolic acid, kojic acid, and lactic acid — which help remove dead skin cells.

As we say goodbye to the MVP of liquid exfoliants, Biologique Recherche P50 1970, try these other expert-approved picks ...

They can come in the form of a cleanser, toner, serum, peel ... yet equally as effective, acids. "Azelaic acid is used by ...

From serum to toner to moisturiser, we’ve found the best azelaic acid formulas out there. We’ve covered how to reform your skincare regime and what new products to add, but there’s also what ...

5. Azelaic Acid How to use it: Azelaic acid can be found in prescription-strength creams as well as a prescription gel. There are also lower-grade options available in over-the-counter serums and ...

Farmacy Brighten Up 3% TXA Dark Spot Toner This juicy toner contains 3% tranexamic acid, as well as azelaic acid to soothe redness and 5% PHA to slough away dead skin cells. It’s essentially ...