TOOK AS DIRECTED AND FINISHED THE ENTIRE BOTTLE...NOTHING HAPPENED FOR MY NAILS, HAIR OR SKIN! I STOMACHED SWALLOWING THESE GIGANTIC SIZED PILLS THAT ALWAYS SCRAPPED MY THROAT ON THE WAY DOWN HOPING IT WOULD WORK BUT NO, NOTHING. I THINK MOST OF THOSE POSITIVE REVIEWS ARE FAKE AND THEY WERE PAID TO WRITE THEM IF THE COMPANY DIDN'T WRITE THEM THEIRSELVES. DO NOT WASTE YOUR MONEY, BUY SOMETHING ELSE!