I have been using this product for a month and got through my first bottle. So far so good! My hair feels thicker, healthier, and I see new hair growth. On the downfall, I have had some breakouts on my face here and there from the biotin...but hoping it passes as my body gets more used to taking this supplement daily. I am taking this with a daily collagen supplement and my hair hasn't felt this healthy in years. Looking forward to seeing more results with continued use!