Blooming gel is the secret to trippy, multi-colored, and multi-dimensional designs. Here's what it is, how to use it, and 10 stunning examples.

J.Lo’s Royal Blue Nails. On the heels of her night out with husband Ben Affleck, Lopez wore a bright cobalt blue nail color in lieu of her go-to neutral shade.

Paint each nail with two coats of a periwinkle blue nail polish, like China Glaze Boho Blues Nail Lacquer (Buy from Sally Beauty, $7.99). Finish with a top coat, like OPI Top Coat ( Buy from Sally ...

Essie Gel Couture Color in First View, $11. ... at least let your toes have some of the fun with a coat or two of this opaque royal blue polish. OPI Nail Lacquer in Rich Girls & Po-Boys, $10. ...