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Hair is made up of protein. Every touch, every treatment, every style you love - it all rewrites your hair’s protein. When protein is damaged, hair’s look and feel are compromised. That’s why Nexxus uses protein science not just to repair hair but to restore its ability to perform. It isn't about one perfect hair day. It's about a lifetime of healthy hair, built strand by strand. Healthy, moisturized hair isn’t just about hydration - it’s about balance. When your hair’s protein-lipid ratio is off, strands become stiff, brittle, dry, and frizzy because the internal structure breaks down and the outer cuticle can’t hold moisture.THERAPPE and HUMECTRESS, our ultimate moisture collection, uses POLYSOFT HYDRATOR technology with tri-lipids and protein-strengthening actives to restore that balance. It seals the cuticle to lock in hydration and visibly combats dryness in just one use. Our #1 best-seller shampoo and conditioner deliver a moisture boost for softness and manageability, detangle hair and reduce frizz for polished strands. This shampoo for dry hair and conditioner for dry hair help rebuild your hair’s structure and lock in moisture, so hair feels soft, smooth, and resilient - no matter your texture. Nexxus, the protein science behind powerful hair since 1979.