This is the best nail buffer I have used, and I have used a lot! I have always bought the cheaper, stick shape ones and find that after about 2-3 uses, the edges start peeling away and the smoothing side is worn down. I have had this for about a month now, and it is still just as good.
I like the shape, and I like the fact that it is rigid and not flexible. I like everything about it actually, and would definitely repurchase.

It really does make your nails shine like crazy. The only reason I'm giving it a 4 is that I wish it had a smoother on one side. I recommend!

Crazy Shine is the perfect name that describes this product. My nails are so shiny. The buffer and polisher is fast and easy to use. It is shaped like a tear drop and a bit bulky in my opinion. I would repurchase.

I love this thing. Makes your natural nails smooth and glossy and unlike a manicure, it never chips.

I love this product. It is quick to use, and gives results that look as good as clear nail polish but don't smell weird or chip. It lasts longer than the 3 days the package says, too - about a week on my fingernails and 2 weeks on my toenails. My only complaint is that the block disintegrates quickly - about a month after I bought it, I'm starting to see signs of wear along the sides. For $6, though, it's not a big deal to replace it every few months.

Love this! I recently have had to stop using nail polish as it takes a beating at work and looks awful after a day. This stuff is cheap, foolproof and makes my nail super shiny and beautiful. This is the perfect alternative to those who are unable to wear polish at work or otherwise. I will definitely buy this again!

Absolutely love this and it's especially great for people who work in an industry where nail polish is not permitted at work.
Takes about 5 minutes from start to finish everytime, to get a nice perfect shine on all your nails.

I have to say that I got this product for free as part of the Ulta points rewards program so the price is not a factor for this review. However, I would consider buying it because it really works as advertised. My nails look like I have a coat of clear polish on them and it only took a few minutes to use (obviously no dry time either!). A nice alternative to nail polish when you don't have the time.

MADE MY NAILS SO SHINY! THEY'RE SO SMOOTH AND SO SOFT AND SSHHINNYYYY! I LOVE LOVE LOVE IT! NEVEER GETTING ANYTHING ELSE. however i dont give it a 5 because it takes forever to work on my friend

It took me a long time to finally locate and purchase this product, but I found it today at Ulta and got the Breast Cancer Awareness version to boot! One of my sisters is a ten year survivor (yeah!!!!) so whatever I can do to support the cause for a cure, I do. Anyway, this is a little gem! I've used other buffers which had three or more steps and never left my nails this shiny and smooth. I, unfortunately, have weak, peeling nails so I always have to have a protective coat of polish on them, but I can already tell that this buffer will make my polish last a lot longer.

It makes my nails really shiny and the application is very easy. The green side buffs the nail surface and the white side smooths out and shines the nails. At first, the shape is a bit different than traditional nail buffers but I find it to be quite a nice shape to use on my hands. The results are amazing, my nails look as shiny as if I have put top coat on and the shine can last quite a few days. This buffer also makes my nail smoother making nail polish application stays longer and easier.

update 1/2012
Yeah cannot use this. The whole thing comes apart and doesnt last long enough to get the job done. Have tried to work with whats left of it but no go. My original review below:
I love buffing my nails rather than polishing them. I agree this gives a great shine, but mine tore in several places first time I used it. I have used so many different buffers over the years, have short nails, so not sure why this tore but its the top layer on both sides that just came up and away from the sponge-y part beneath. I know this wont last long because its already falling apart and I've only used it once. again, great shine, shape and idea too, maybe I have a defective one? I wont be buying this again and have to add I looked so forward to finally finding one in the store!

Great product! You use the gray side first to buff, it makes the surface of the nail more even then you use the white side, which is like magic. it makes your nail look like you have fresh clear polish on. After I had done my nails a week before and had nail polish on even after taking off the polish my nails were still shiny. The best part is that I only paid 3 bucks at Target. I love this product!

I love this so much. Not only does it give bare nails a great shine, it is also fantastic for "perking up" existing nail polish using the white side only. I just renewed a two-week-old pedicure with Crazy Shine, with next to no effort...
I also love the shape of this buffer, it is so comfortable to use. A must-have for every person who likes groomed nails. (Hint: buffing your nails will help them grow!)

I pick this thing up @ home all the time, it makes my nails look like glass. The shine lasts through polishing and removal and gives a great smooth surface to lay your color on. The biggest downside? It squeaks. I'm pretty sure my boyfriend wants to toss it out the window when I pick it up while we're watching a movie.

Unbelievable and so easy. It definitely gave my nails a polish shine. I only tried on bare nails. Followed directions of buffing my nails with the green side, then with the white side. And, viola...shiny nails. Love it.

This thing is amazing. I picked this up at Walmart for about $3 and I use it about once or twice a week. It makes my nails crazy shiny, and the shine lasts for a few days on me. I love this thing!

This thing is freaking amazing, green side does a good job smoothing but the high gloss shine and smooth feeling from the white side is unbelievable, more shine than polish. Worth every penny I couldnt recommend this more if you buff your nails or if you are looking to get away from polish. I wish my car was a shiny as my nails right now.

This really works. Makes my bare nails look like I have oil on them they're that shiny. Even after I take off my polish my nails are still super shiny. Mine was about $3-4 but then I also had a $1 off coupon. This isn't a full blown buffer. It won't buff away stained nails. I have a four sided buffer that I use once a month. The first two step I use my old buffer and just use this one for the final two.

This buffer works just as well if not better than the 3 to 4 side versions. The green side really works out the ridges and the white side produces such a high sheen without stripping the nail of anymore layers. I would have to complain about the shape though. The edges are the first to wear down and the middle usually remains untouched because it's hard for me to get to. If Revlon shaped this buffer differently so that you could have easier access to the entire surface area of the product, then it would be perfecto. I like to buff my nails in between polish changes to let them breathe a little and this is my favorite tool to get them nice and shiny :)