Amazing as a base and topcoat, I have been using this since I was a wee girl first painting my nails. Takes a little while to set, but once it's on, you're good. Leaves my nails chip free for days.

This was a perfect base coat for me. I just got my fake nails off, and this filled my ridges to make my nail polish go on smoothly. It was only 2 or 3 dollars. However, I like the Sally Hansen triple strong a little bit better for a base coat because it makes my nails super super strong. But, if I couldn't find triple strong or feel like paying extra for it, I would be the advanced hard as nails base coat. I haven't had anything fill the ridges this well.

I love this nail polish. I don't ever wear colors on my nails but I prefer to always have a nice clear coat on them to keep them looking shiny and polished. This nail polish is perfect for that purpose. I apply two coats of this on my nails and it lasts anywhere from five days to a week depending on the type of activities I do. I wish that it lasted longer so I don't have to redo my nails each week but it's really not a big deal for me since I enjoy giving myself a manicure.

UPDATE: I found that this serves as a wonderful top coat over colored polishes. It adds a great amount of shine and seems to provide good protection to the color.

Very disappointed. As a base coat/top coat, this did nothing to make my polish last longer. In fact, my polish actually peeled off, like in one complete piece! This did not work at all!
I definitely prefer the Hard as Nails Xtreme Wear nail polish in Invisible.

Definitely does its job! This keeps my nails 'hard-as' for days! I use this as a base and top coat for my French manicures and it works perfectly. I do re-apply one coat every few days to keep my nails strong and shiny, but this is just my personal preference. Highly recommend it!

I love this clear coat, it was only $2 CAD(Walmart) I was looking for a clear coat, and this one is just amazing. sooooo cheap, it dries quickly, and has a really nice shine and is hard, and lasts very long.

DO NOT WASTE YOUR MONEY. I am returning this tomorrow.

This si the worst nail polish ever! I ough the clear and white one I thought it'd be good for a french manicure but it's so gross. The nail polish dries out soooo quickly and it starts chipping withing a few days.

STAY AWAY FROM THIS PRODUCT!!!

This polish is amazing. This past summer I went through a major nail crisis. I've always been a nail polish girl ( since I was 7 ). I guess time and constant nail polish use finally caught up with me. My nails had become brittle and embarrasingly weak. They were constantly chipping and breaking. I bought this on a whim as I LOVE Sally Hansen nail polishes. The moment this dried on my nails, I noticed an immediate difference. My nails have gradually become stronger with continued use of this. I hardly experience any chipping or breaking anymore! The shine it gives the nails is really great. It leaves your nails shiny for a long time and lenthens the life of a manicure. I will absolutely repurchase!

This is for the Advanced Hard as Nails with Nylon and Retinol

I'm not really a nail person, as I only ever wear clear polishes. Of all the nail strengtheners I have tried, this is by far the best. Usually they make my nails so hard they become brittle and break. My nails feel strong and flexible with this and they are extremely long. Excellent shine and staying power.