Difeel Elite Glycolic Acid & Biotin Stimulating Hair Serum 2 oz. Promote Hair Growth for Women and Men - Difeel Elite Stimulating Hair Treatment is an expertly formulated blend of Biotin & Glycolic Acid. Biotin is a B Vitamin that helps to promote healthy hair growth by strengthening hair follicles and increasing the production of keratin, the protein that makes up hair. Hair Regrowth Setum for Women & Men - Exfoliates the Scalp and Improves Scalp Health: Glycolic acid is an alpha-hydroxy acid that can help to exfoliate the scalp, removing dead skin cells and promoting healthy skin cell turnover. Can also help to unclog hair follicles and reduce scalp inflammation, while biotin can help to reduce dryness and itching. Hair Growth Scalp Treatment Reduces Frizz and Increase Hair Shine Glycolic acid can help to smooth the hair cuticle, increasing shine and reducing frizz while exfoliating the scalp and reducing the buildup of dead skin cells. Glycolic Acid Hair Treatment Reduces Frizz and Flyaways Difeel Elite Hair Serum can help to smooth the hair cuticle, reducing frizz and flyaways and leaves hair looking smoother and more polished.ion. Hair Growth Treatment for Men and Women Easy Difeel packaging - Made in USA