Ceramides and lipids support the skin barrier, retinol and peptides support aging skin, and AHAs and BHAs help exfoliate the skin. Learn what each ingredient does and how salicylic acid fits into the BHA category. The ingredient lesson also explains how to layer cleanser, serum, moisturizer and SPF, why using retinol across multiple products may irritate the skin, and how CVS Beauty consultants and pharmacists can help with skincare ingredient and product questions. Chapters: 0:07 - Skin Care Ingredients Explained 0:32 - How the Skin Barrier Works 1:08 - Ceramides & Lipids for Skin Barrier Support 1:35 - Retinol & Peptides for Aging Skin 2:12 - AHA vs. BHA Exfoliating Acids 2:32 - Salicylic Acid: The Key BHA 2:55 - How to Layer Skin Care Products 3:00 - How to Use Retinol Without Irritation 3:25 - Where to Get Help With Skincare Ingredients 3:42 - Accessible Skin Health at CVS Stay connected with CVS Pharmacy: Instagram: instagram.com/cvspharmacy Facebook: f...