I gave this product two weeks as I looked for signs that it was doing anything. I took a half of a dropper, everyday for two weeks, usually after eating. The taste of it is not horrible, but I winced every time I swallowed it. It did taste like vanilla, but like a medicine-y vanilla...so not great. But, it's not candy, so I was not overly concerned about that. I must say that I did not notice any real difference in my hair, nails, or skin. My hair was the same, which I like. My nails were still flimsy and did not grow a noticeably faster rate. My skin did not clear up on my cheeks or get noticeably softer anywhere else. I have started getting random itchy patches on my legs. But, because it's spring time in south Texas, that could be attributed to any number of things. So, while I appreciate that this is a vegan product with nothing artificial, I didn't see that it helped me in any way. I will keep taking it for another couple of weeks to see if I do notice anything.