Delivers 2X fuller*, stronger** hair in just 2 weeks (*bulk fullness; non-conditioning shampoo + Full & Strong Advanced Thickening Treatment vs. dirty/unwashed hair) (**strength against damage; System of Full & Strong Shampoo, Conditioner and Advanced Thickening Treatment vs. non-conditioning shampoo) Designed to thicken each individual hair strand for significant hair fullness improvement starting at the scalp Invigorating tonic infused with caffeine and vitamins to hydrate and nourish the scalp (*non-conditioning shampoo and Full & Strong Advanced Thickening Treatment vs. dirty/unwashed hair) (**strength against damage; System of Full & Strong Shampoo, Conditioner and Advanced Thickening Treatment vs. non-conditioning shampoo).