I was very skeptical about this product, but I bought a smaller bottle on sale at Sally's and it is AMAZING. My thinning hair has been my biggest source of insecurity for the past ten years. It is all I could focus on when I looked at myself in pictures or when getting ready. I was sure everyone was always thinking "she would be pretty if her hair wasn't so THIN". This stuff works! It covers up the visible scalp and you cannot tell it is a topical "fiber" unless you get your eyes centimeters away. I have had so many compliments on how my hair looks and I recently had family pictures taken - I know without this product I would have just been sad about how awful my thinning part looked - now I post pictures with confidence. Only wish I would have tried it sooner!! Now I bought the largest size available from Amazon and it is less than half the price of Sally's. I hope they never stop making it!!