Enhance your hair's volume and texture with the Biotin & Collagen Shampoo and Conditioner set. The vibrant purple bottles add a touch of elegance to your bathroom routine. OGX Thick & Full + Biotin & Collagen Shampoo is a volumizing shampoo that is ideal for flat to medium volume hair. It is formulated with biotin, collagen, and wheat protein to help strengthen hair and maintain growth. The shampoo is also sulfate-free, paraben-free, phthalate-free, microplastic-free, and dye-free. Keratin Oil Shampoo Anti-Breakage Indulge, fortify & strengthen your tresses with this damage repair shampoo. Formulated with keratin & argan oil, the fortifying shampoo helps prevent breakage, strengthen split ends & reduce frizz. Formulated without: Sulfated surfactants Parabens  Sizes available:  13 fl oz