Ahh, le piece de resistance! Gradient nails are one of my favourite things to do because they’re so easy but look so good. I’m loving how it looks with rainbow colours! Cut a piece of sponge that’s roughly the height of your nails, a little taller is better than a little shorter. Unscrew the lids of all your rainbow polishes and working quickly, paint a stripe of each colour onto the sponge in rainbow order. If your nails are short, you may want to do very thin stripes or just work with fewer colours. While the polish on the sponge is still wet, start dabbing it onto one nail. You might want to move up and down the nail a couple of millimetres to help the colours blend seamlessly into one another.