OGX XS Biotin & Collagen Conditioner is a volume-creating powerhouse with an extra helping of vitamins and proteins to pump up flat strands. Extra body doesn’t mean extra weight with a thickening, sulfate-free surfactant blend of nourishing ingredients for full, voluminous hair. Biotin, or vitamin B7, is crucial for skin, nail, and hair health. Paired with collagen, this blend helps nourish hair for a full, healthy look.