Bought to stop hair loss. In a complex with horsetail hair loss reduced by 40%. Not perfect, but the problem is not biotin, and the causes of hair loss. In parallel, and took to the skin because at the time I decided to take a break in the reception of collagen. I note that, as with collagen necessary to the consumption of large amounts of water for the desired effect on the face. I drink very little, so they had to force myself, but the effect is pleasing. I'm more worried about fine lines under the eyes, what would I do not smear, the result I did not like. And then just a joy to watch in a mirror)))