HAIR BIOLOGY THICKENING TREATMENT 6.4 oz

HAIR BIOLOGY THICKENING TREATMENT GREAT HAIR DOESN'T STOP AT 50 SPRAY 6.4 oz. We've formulated products that are specifically designed to work with our unique hair biology to give you amazing looking thick hair at any age. Hair Biology Hair Thickening Treatment instantly thickens each strand of hair and fights breakage for fuller looking thick hair. Made with biotin and free of parabens, our Collection is specially formulated to be safe for thin, flat or thinning hair.