Delivers 2X fuller, thicker hair* in just 2 weeks (*bulk fullness; non-conditioning shampoo and Advanced Thickening Tonic vs. dirty/unwashed hair) 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 Helps lock in scalps natural moisture Instant drying and lightweight formula is gentle enough for everyday use on hair