The best retinol serums, expert-tested. Shop our top formulas for beginners, sensitive skin and more, including a guide on ...

People who have used prescription-strength Tretinoin say the over-the-counter cream has given them the same results they had ...

Adapalene (the active ingredient in Differin) is the first retinoid approved for over-the-counter use and is now widely ...

Retinol: It's the skincare ingredient that needs no introduction. By now you're likely already aware of the near infinite benefits it has to offer. From working wonders on fine lines and wrinkles ...

the skin product you’re using includes a very high concentration of retinol your skin is getting used to the effects of retinol and may become irritated in response to the high rate of skin cell ...