I've always had thin fine hair that hardly ever grows more then 6 inches a year! However with Revitalocks I saw some major changes! I absolutely love them and plan to continue taking them. The only thing I didn't like is that they automatically charge your card for the next month unless you cancel, kind of like a subscription, however their customer service was very helpful in giving me my money back and even let me keep the extra bottle they sent! Plan to order more as soon as I run out!