Let me preface by saying that I have never written a review for any product before, and I do a lot of shopping online. I felt compelled to write this because Qtica`s Natural Nail Growth Stimulator exceeded my expectations. For a few years now, my nails have been weak, splitting, and dry. Taking biotin supplements seemed to help, but of course that takes months to see any difference. However, after using the Nail Growth Stimulator for 2 weeks, my nails are growing easy and the split layers are almost completely grown out. They are noticeably stronger (I spend my work day on a computer), and I actually have some length again! I kept the product on the entire time, only removing it a couple times to apply a fresh coat or two. So, if you`re experiencing the same difficulties with your nails as i was, this is definitely worth the price. I will be making Qtica Natural Nail Growth Stimulator a staple in my nail care wardrobe.