Give your locks a fuller, more voluminous looking life. The thickening power of Biotin and Panthenol wraps around the entire hair shaft, boosting volume and revitalizing hair cortex elasticity for less breakage. Energizing plant proteins add lively luster and weightless bounce. Strand by strand, your limp and thin hair grows seriously stronger, thicker and full of life. , , Directions for use: , On wet hair, gently massage shampoo into hair and scalp. Rinse and repeat if desired. , Follow with Jason Thin to Thick Extra Volume Conditioner.