Easy to apply to either wet or dry hair and suitable for all hair types, Paraben-free, SLS-free, SLES-free. The Hair thickening serum is a lightweight leave in treatment that coats each hair strand creating multi-dimensional density without frizz leading to thicker fuller hair. The serum works by Volumizing hair building blocks biotin and keratin and fortified with marine collagen and seaweed extract. Serum is lightweight, volume-boosting leave-in treatment for thicker looking hair. Includes a proprietary complex that contains seaweed, marine collagen, biotin, and keratin. Backed by over 25 years of research and development with comparable formulas, millions of women around the world have discovered the power of Viviscal Hair Growth Pills for Women to promote thicker, fuller and healthier looking hair (4). Supplements are 100% drug free, this hair supplement is made with proprietary Aminomar Collagen Complex and other key ingredients to support healthy hair growth including Biotin, Zinc, Vitamin C, Iron, and Niacin.(1). One 180 ct box of Viviscal Hair Growth Supplements for Women Suitable for all hair types, Viviscal Hair Growth Vitamin Supplements have been scientifically proven to nourish thinning hair and promote existing hair growth (2).