To explain why, a lesson in hair1: The outermost layer of the strand is the cuticle, or scales of dead cells that lie atop each other like shingles on a roof. These cuticles can be lifted up or sealed down. When they are lifted, hair appears frizzy; when they are flat, hair is smoother. Shampoos have the impressive ability to blast open the cuticle—and if you get one that is too strong or not buffered with hydrating actives, you run the risk of lifting the cuticle too much and thereby impeding your chances of sealing it later. Nine Organic Hair Cleanse, Jim and Henry ($24) Hydrating Shampoo With Aloe for Dehydrated Hair, Christophe Robin ($34) Nourishing Shampoo, Grown Alchemist ($49) Hatian Black Castor Scalp Care Moisturizing Shampoo, Kreyol Essence ($20) Farewell Frizz Smoothing Shampoo, Briogeo ($24) Yamuna Nourishing Shampoo, Abhati Suisse ($54) Coco Crème Sulfate-Free Shampoo, Carol’s Daughter ($10.99) Anti-Frizz Shampoo, Seed Phytonutrients ($18) Smooth Infusion Shampoo, Aveda ($24)
