The Beginner’s Guide to Retinol
By Kiehl's Date July 16, 2021 Facebook Twitter There are certain ingredients that have achieved star status in the skincare world, and one of them is retinol. Commonly deemed as the gold standard by dermatologists, retinol is a type of retinoid which is derived from vitamin A and is commonly found in its weaker form in skincare products like serums and moisturizers. The umbrella term “retinoid” also includes retinoic acid (also known as Retin-A or tretinoin), which is its prescription-strength counterpart. Despite retinol’s stellar skin improving reputation, it can be...