This is a tentatively positive review -- I come back and edit purchase reviews if they either don't last or are lasting exceptionally well, even after years of having the item. (EDIT: see bottom of post for happy update! :) )I bought this and received it yesterday, after a really annoying transaction with a local nail salon where they did sloppy work and skipped a step so my gels were peeling off within two days. Thought to myself "I have steady hands, how hard can this be?" Last night I used the Gelish pH coat, foundation coat, Gelish polish and top coat with the SunUV 24W LED lamp. Here's the breakdown.This cute little thing was super easy to use. Not being sure my first time and not wanting to mess it up, I cured each coat under the lamp for close to 2 minutes just to be sure...next time I'll try just 60 seconds and then maybe 30 to see. You can definitely feel the warmth of the tiny bulbs: it's not HOT, just warm so that you know it's working. I don't think there's anything "UV" about it, I think it's all LED, but I didn't stare at it anyway. I did my thumbs separately because despite the curve of the lamp, I wasn't sure if it would get all of my thumbnail along with the four fingers due to the way my thumb naturally points down (edit: after 10 months having it now, I can say just put your whole hand in, it does all fingers and thumb equally at the same time).One thing that was odd about the lamp was that it felt ever so slightly like my nails were burning -- but only after the top coat! Not a single other layer felt like that! And I had four opportunities to feel it...two sets of four fingers, two separate thumbs...felt a tiny bit weird for just a couple of seconds and then the sensation quit. I don't know what that means, I don't know that I really care, it wasn't super painful and didn't seem to hurt my skin at all. If all my nails fall off in a couple of months I'll be back here to complain. (edit: comment from Lawrence below was correct -- if you get the burning sensation take your hand out immediately for a second, blow on it, and stick it back in. It's just an initial reaction and won't continue after that)It's only been one day but my nails do look fabulous and seem to be rock solid like after a salon visit, so I'm extremely pleased. To anyone grousing about stickyness -- are you making sure you thoroughly wipe your finished nails down with alcohol? That's THE final step, you're not done till you do that and it WILL be tacky if you don't.EDIT: going on 5 days now, still no chips despite some pretty harsh housework.EDIT 5/15/17 (3 months in): I love my little lamp! I'm so impressed with it. No bulbs have burnt out so far, all the timed and automatic features are still working great, and the effectiveness hasn't diminished. Even if it kicked the bucket tomorrow, I'd re-buy for the great price. I've gotten months of fun out of it already with great looking, salon-hard nails. It's so worth it for a little "me" time, without having to get out of my house to the salon. I put a towel down on my bed and the lamp over it, and watch a movie while I do my nails. Probably one of the best things I've ever bought off Amazon so far. I do NOT need to do it for the auto-90-seconds, I just do about 30 seconds per coat.EDIT 12/4/17 (10 months!): I can't believe this thing is still working! No bulbs out, still curing beautifully. I take back what I said about just 30 seconds per coat though...I do believe that for maximum staying power, 90 seconds is best, 60 seconds minimum. I noticed that my nails were peeling after just four days when I only did 30 seconds per coat.EDIT 5/9/18 (over the year mark!): Definitely one of my best Amazon purchases. Still working its little heart out on a bi-weekly basis. I have such weak, oily nails I do sometimes get a little peeling around the 1-week mark, but it was like that for me at salons too. Easy enough to just soak the chipped nail off and paint a new one on. This is the ONLY way I can grow nails.EDIT 8/21/19 -- Y'all, I don't know how this thing's still going for the price I paid for it, but I'm astounded. Love my lamp, love my nails!