I started off loving this product because it worked. Unfortunately, on my third manicure which I just finished, it started reacting badly to the led lamp and destroyed my entire manicure. I tried it with fewer drops of transformer, then more drops, and still had the same result. It looked normal when painted on, but under the lamp it started to shrink up and looks lumpy and crepe-papery. I was so excited thinking I’d be able to use my regular nail polish again, but this was a waste of money and of several hours, because I have to take it all off again tomorrow. Thumbs down.