DONT BE FOOLED BY CHEAP IMITATIONS. Most hair and hair regrowth serums use harsh, unnatural chemicals. Hair Thickness Maximizer focuses on Biotin along with high quality ingredients that works to nourish, revitalize and protect your hair. SEE and FEEL the difference.Hair Thickness Maximizers Biotin Hair Growth Serum: - Promote strong, healthy, thick hair. - Nourishes scalp. - Assists in the preservation and strengthening of existing hair and follicles - Protects from damaged, dry, frizzy hair, brittle hair, dry scalps, and dandruff I am the person that doesnt wash my hair very often (2-3x per week at the max) so I get nervous about trying new things that need to be left on my hair, specifically my scalp because I dont want it to look greasy. This does not do that at all!! Its very light and doesnt have a scent. Leaves my hair extra shiny! ~ Dev S Use for AT LEAST for 3 to 6 months for effective results. No Additional Hair Tonic, Hair Cream, Hair Vitamins or Pills Required but for additional supplementation you may combine with usage with Hair Thickness Maximizer Shampoo (also available on Amazon) for the great results. Apply a few drops to the scalp of the affected area ,and very gently massage into scalp. Leave overnight. Apply 2 to 4 times per week. Ingredients: Deionized Water, Vitamin E, Hydrolyzed Wheat Protein, Hydrolyzed Soy Protein, Tripeptide-10 Citrulline, Tripeptide-1, Lecithin, Biotin, D-Panthenol - Pro Vitamin B5, hydrogenated coconut,Royal Jelly, Silk Extract, Squalane , Ginger extract, Amla extract, rosemary extract, Thyme extract, nettle extract, tea tree extract and more!