100% clean for your healthiest looking hair ever. Unlike typical shampoos, this sulfate-free formula LEAVES NO RESIDUES, which is key because residues can block hair follicles, leading to hair thinning. Formulated without silicones, conditioning agents, thickening agents, or other ingredients that don't rinse off completely. Clear, residue-free formula won't dull color, weigh hair down, or impede new hair growth, Hair (and scalp) are clean and fresh. Comes in 8.4 fl oz bottle.