Olaplex Shampoo No.4 cleanses, restores, and nourishes hair while protecting it from everyday stress. Its unique formula repairs damaged bonds, leaving hair softer, shinier, and healthier. Key Benefits • Repairs and strengthens hair bonds. • Gently cleanses without stripping moisture. • Adds shine and smoothness. • Free of sulfates, parabens, and phthalates. How to Use Apply to wet hair, lather, and rinse thoroughly. Follow with Olaplex Conditioner No.5.