Nick Chavez’ Plumper ‘N Thicker Ultra Thickening Shampoo with Bio-Gen Technology is a nutrient-rich, power-house of ingredients called Bio-Gen, which consists of ProVitamin B7 Biotin and Collagen. This shampoo creates the ultimate thickness for fine, thinning hair. Gently formulated to use everyday. Helps give each strand of hair a beautiful boost! It will leave your hair feeling thicker, fuller and looking healthy and shiny. Safe for colored and chemically treated hair. pH balanced. Directions for use: Wet hair thoroughly with warm water. Apply a small amount of shampoo on hand and massage into root area of hair. Rinse with cool water. Avoid contact with eyes.