Formulated with vitamins, peptides, and amino acids, this hair enhancing serum helps to support hair follicle health for the appearance of healthier, thicker looking hair. GrandeHAIR serum is formulated to use on dyed hair and works for both men and women. What It Does • Formulated to use on dyed hair • Works for both men and women • Dermatologist tested • Cruelty-free