Nail Envy Nail Hardener.

"I use that OPI Nail Envy as the base coat and that stuff makes my nails so hard. I don't have brittle nails, but my nails when I grow them out the edges get real snaggy and they kind of curve a little bit. Whenever I do the Nail Envy it does allow my nails to grow out a little better and I'm able to tolerate having them longer."

"The OPI Nail Envy Nail Hardener nail strengthener works really well as a base coat."

"This is the OPI Nail Envy. I've had this bottle now for over a year. Anytime I paint my nails, I love using this because it's a nail strengthener. It really does keep the nails, and I find that it cuts down on nail breakage when I do a manicure. But it also is a really really good base coat. The nail polish does not chip. The last manicure that I did was a few weeks ago and it's amazing, like the longevity of the nail polish using that is just wonderful. And the nails themselves, you can see my nails I've kind of let them grow out a bit, usually I cut them a lot shorter, but they are not brittle now. I don't usually have any kind of nail health problems, but if I had not used that nail strengthener I could not have grown them out to this kind of length. They usually get a little thin on the edges, but when I use that strengthener pre nail polish, I'm able to keep them strong."

"This is what I have been using for months and months. This works. It is a nail hardener. You have to be careful because a lot of people are allergic to the ingredients in these nail hardeners and it's going to end up causing more problems for you in the long run. Some people find that they make their nails more dry and brittle, but for me this works like magic for my nails. It keeps them from snagging on things and it allows me to grow my nails out long, and the polish stays on."

"I swear by OPI's Nail Envy as the base coat because I've had this on for going on a week now and it really helps the nail polish stay on a long time and it is a nail strengthener so it makes your nails like really hard so I use that let it dry then put the nail polish over."

"I've taken to painting my nails with the OPI Nail Envy clear nail polish, this stuff is so good at at least temporarily while you have it on, reducing nail breakage. I'm always able to grow my nails out when I wear this; it just keeps them from getting kind of frayed on the ends."

"A Dollar Tree version of the OPI nail mvy nail hardeners for me work great"

"I went ahead and trimmed my nails last weekend I was telling you about how the OPI Nail Envy whenever I paint my nails and I use that and it makes it so that I can grow my nails out really long but eventually I get sick of them and I don't know I can't handle them anymore and I have to cut my nails."

"I painted my nails with the OPI Nail Envy and it's the only thing that helps keep my nails from breaking. Like when they're growing out I can actually grow my nails out when I wear it."

"The other nail product that I often use but I haven't used in a couple of months actually out of sheer sloth is the OPI Nail Envy. Now that's a nail hardener that really works well. Like I'm able to grow my nails out to this length when I use that and it looks like I got, you know, they look really good when I use that consistently. But that turns into this thing where once a week I have to take it off because the nails start to grow out. I have to use nail polish remover, put it back on again, which it's fine, but like I said, I'm lazy. I don't want to dedicate my time to that all the time."

"I can tolerate growing them a little bit longer if I have been using that OPI Nail Envy. That stuff works really well."

"All I use on my nails is OPI Nail Envy. I file them, then paint on the OPI Nail Envy, and that stuff works really well to keep the edges from getting snaggy. Once a week I take it off and put a new coat on, and that's been working out really well for me. It's been my little routine."

"I love this OPI Nail Envy product. This is great for keeping the polish lasting longer, it's a base coat and nail strengthener. If you're allergic to formaldehyde resins however, you would definitely want to avoid this. Nail Envy is expensive but it's definitely worth it in my experience as a base coat. It dries pretty quickly too, it just helps the polish stay on a lot longer, but it smells really strong so definitely do this in a well ventilated area."

"This was sent to me from Amazon. It's a nail strengthener with wheat proteins that similar to hair conditioner fill in the little porosities in the nail and reduce nail breakage. While they don't actually make your nails truly stronger or correct brittle nails permanently, they're just a temporary band-aid on brittle nails. The reason I really like this is that it helps the nail polish go on better and lasts longer. The duration of polish wear is much longer using this, and I will definitely be purchasing this myself when I run out of this."