I used it as a base and I think it caused some reaction with the polish, as in some areas the color became darker on some nails (I did not use it on my toenails and there is no discoloration, so it must be the product's fault). Also, I noticed that the polish peels off when used as a base, I don't have an opinion on that yet.

Personally, I, who used it once a week, did not see any difference. Maybe it needs to be used more frequently. Also, you have to use it alone because if you use it as a base, the nail polish you put on top will peel off. I would not buy it again.

Very good product, helped my nails to harden and grow, but you need to apply it every two days to see a difference. Of course, when you stop using it, after a while it's like you never used it. I have thin and weak nails.

It doesn't do much. If you use it as a base coat, as it claims, it simply removes your nail polish in one day. I wouldn't buy it again, it's terrible!