I bought this solely based on the good reviews that were left. I needed something to improve the strength of my nails and my nail health. I have a great base coat but I work with latex gloves on most of the day and because of that, I get a lot of moisture that softens my nails. This has worked to keep my nails strong and hard even when extreme moisture is involved. I haven't seen much of a difference in my skin or hair but I didn't purchase for those purposes. I have naturally thick afro textured hair so I don't need help in that department.