-- THICKER HAIR: People love how Bellissos biotin hair serum gives them the appearance of thicker hair; By coating each strand with a blend of botanical based hair oil and salon grade biotin, our hair thickener serum boosts volume, giving you thicker feeling locks that are sure to turn heads -- REPAIR DAMAGE: Our hair thickening products for women and men are also professionally recognized for how they help repair damage from exposure; Bellissos hair strengthening products can give dry, brittle split ends new life; When you need nourishment from root to tip, this biotin hair thickening serum is the answer -- Biotin Hair Growth Serum: Strengthens and protects the hair,thicker, revitalized hair,promoting hair g-rowth, prevent hair r-oots from falling out. -- Suit for the people: Biotin hair growth serum suitable with slow hair g-rowth, dry and split ends, thinning hair,damaged hair from perms,hair loss, dull and lifeless hair,and brittle and unmanageable hair. -- Easy to Use: Apply directly to hair roots and massage until fully absorbed. Continued use will result in shinier, softer, less hair loss.-Use twice a day for better results.