Bests & Worsts Reviews from Amazon

I used to be a terrible nail biter and this product has been an amazing help on my road to kicking the habit and finally growing strong healthy nails. It also works as a great base coat with most polishes, though I've found it especially effective when used with OPI colours and topcoats. I'm skeptical about the negative reviews here saying they caused damage. I buy mine from Ulta which is a similar price and I assume the people who had burning issues with this were sent a fake product. My only other comment is that the green original Nail Envy works best for me. The split & peeling nails and the matte versions didn't seem to have the same effects. Though I'm yet to try the coloured versions. I've attached my (terrible) before and after photo. I'm not sure I could have turned my nails around without this product.