This Revolutionary Sulphate Free 100% Vegan Thickening Shampoo Is The First Step Toward Thicker Fuller Stronger Hair. Samys Exclusive Fh4 Thickening Complexa Blend Of Natural Extracts And Proteinspenetrates Each Hair Strand Increasing The Strands Diameter And Expanding The Hair From The Inside Out. The Resultthicker Fuller Stronger Healthier Looking Hair.