Dyson Chitosan Post-style serum is a lightweight post-styling hair serum that provides flexible, all day hold for smooth, shiny, frizz-free hair. Formulated for all hair types, this lightweight serum simultaneously Nourishes individual hairs, while locking their shapes with a flexible bond structure without compromising your hair s natural feel. For use on dry and styled hair to define style. Ingredients: Aqua (Water/Eau), Dimethicone, Polyglyceryl-6 Stearate, Glycerin, Phyllostachys Bambusoides Extract, Chitosan, Hydrolyzed Hyaluronic Acid, Panthenol, Leuconostoc/Radish Root Ferment Filtrate, Caesalpinia Spinosa Gum, Sclerotium Gum, Helianthus Annuus (Sunflower) Seed Oil, Sodium Pca, Arginine, Pca, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Sodium Hyaluronate, Cetearyl Alcohol, Polyglyceryl-6 Behenate, Lactic Acid, Sodium Lactate, Tocopherol, Aspartic Acid, Sodium Hydroxide, Parfum ( Fragrance), Phenoxyethanol, Sodium Benzoate, Potassium Sorbate, Citric Acid, Limonene, Citronellol, Citral(1)vs. untreated.(2)vs. untreated hair. Tested at relative 80% humidity.