Restore smoothness and shine with KERAGEN Keratin + Collagen Sulfate Free Smoothing Shampoo. This professional-grade formula combines keratin and collagen to strengthen, nourish, and smooth damaged or frizzy hair. Sulfate-free and gentle, it cleanses without stripping natural oils, leaving hair silky, manageable, and visibly healthier. The generous 128 oz size provides extended use for daily care. Perfect for all hair types seeking salon-quality results at home.