I can't say enough about this product. I have never, never had nice nails. So I bit them. I thought why bother. So on a spur of the moment kinda thing, I bought the formula 2. I've been using it for two months. Oh my god.I have really nice nails. They are long and strong and when I went home for a vacation, my long time friends thought they were fake. Hee hee. If you ever thought you couldn't grow beautiful nails, try this product. This is the first time I have ever wrote a review. But this product worked so well for me, It was worth the time it took to tell you about it..