Boots 200 Clear Nails is by far my favourite. For £8.50, you get 200 nails and a 3.25ml clear nail glue. The nails fit perfectly (although I can't use them all as some don't fit - there are 10 sizes) and they aren't too long so they are easy to wear on a daily basis. All you need to do is apply a small amount of nail glue to the nail and press it onto your nail. Simple!
I'm not a big fan of the nail glue, it isn't as strong as others, but I do use it up and my nails will normally start falling off after a few days (depending on how often you use your hands) but you can easily just stick them back on.
The nails look very real and you can wear them without any polish, but I prefer to paint them. No matter what nail polish I use, it never ever chips. And that's without a top coat. To remove the nails, you just need to soak them in Acetone-based nail polish, but I've never needed to as they normally fall off in time.
I would definitely recommend this kit for anyone who regularly buys false nails, as it is a lot cheaper than going to the salon. You can purchase them here and if you'd like to get cashback on any Boots online sale, then I would recommend Quidco* - definitely worth a look!
*This link is a referral link. If you sign up, I will get a small amount but this will have no effect on the amount you earn at all.