OGX Thick & Full+ Biotin & Collagen Shampoo is an exclusive blend of Vitamin B7 biotin, collagen and hydrolysed wheat protein that helps thicken and texturize any hair type with just one use. , A powerful sulfate-free formula, OGX Thick & Full+ Biotin & Collagen Shampoo helps volumize even the skinniest strands to create an appearance of thicker, fuller and healthier looking hair. , OGX beauty pure and simple! , How to use: , Apply shampoo generously to wet hair, massage into a lather through to ends, then rinse hair thoroughly. After shampooing, follow with conditioner.