This Rimmel Lycra Pro nail varnish has been my favourite summer colour, I love it! I originally bought it as a dupe of Essie's Mint Candy but it is actually more of a brighter colour when it is applied. I have been wearing this constantly!
In the photo I have applied one coat of my Essie ridge filling base and 2 coats of the peppermint. The varnish has quite a large brush so it is very easy to apply.
However I wouldn't say that it lasted 10 days, I've had it on for 2 and it has already started to chip on the edge of my nails. But I would still highly recommend it for the colour alone.
You can get Peppermint here.