OPI Nail Envy Nail Polish, Nail Strengthener Treatment with Biotin, Calcium & Vitamins for Strong Natural Nails, Vegan Nail Repair and Strength for Damaged Nails, Clear Nail Polish 15ml

Can't fault this at all. I've got really brittle nails that split and crack. And I've got ridges on my nails (obvious on my thumbs in these pics, Beau's lines I believe) but this has strengthened them so much. Longer nails than I've had in years. Well worth the money!

Purchased at the same time as OPI's new Repair Mode and followed their instructions. I've gone from being a life long nail biter to having beautiful and strong nails. I followed OPI's instructions on using these together for a couple of weeks and then bought some coloured Nail Envy and I'm loving how my nails look now. Completely recommend (and used a glass nail file - converted from emery boards).

I have always been a nail biter. I do it when I’m bored I do it when I’m anxious and for 2025 I wanted to take more care of myself including my nails because it’s embarrassing when other people see them and how painful the skin around my nails get from picking and biting.This is my 1 month update of using this product. I try my best to apply once a day but life gets busy! But I mainly stopped biting my nails and keeping myself busy if that includes chewing gum or having a drink of water near me.Stopping the habit is hard to kick but it has definitely been one reason why I have seen some growth along side this product, nail oils and hand cream!Can I say this product works? Maybe? I like the smooth finish it gives and my nails do feel stronger. I am still a picker but having this top coat I tend to pick at that and not my actual nail then reapply.I would recommend but I would also look into your habits if you are like me :)

My nails are so much stronger nowGreat product

Excellent product just not noticed much difference in nails

Have been using this for over a week now and my nails have got worse! I believe this has dehydrated my nails as they are now flaking, splitting and breaking.

My nails love this stuff. I usually use it for about a week and then give them a break, and they always end up looking so much healthier. They feel stronger, look shinier, and just overall more put together. It’s probably my favorite nail product I’ve bought recently. It is a bit on the expensive side, but honestly I think it’s worth it—especially if you manage to catch it on sale.

Good but needs regular usage.