The Coolest New Nail Trend: The 'Undernail' Mani

 

Of course, this trend is pioneered by none other than the Christian Louboutin nail lacquers that have hit selves this season. Their iconic red soles have now made their way to our nails—genius! Although this trend is a no brainer to execute, there are some important tips to mastering the undernail manicure.

 

A regular nail polish brush may be too big and cause a mess, so you'll want to use a smaller, thinner brush—you can find these at your local craft store or buy them online, like this 5-piece paint brush set ($3.16).

 

And if you're going to be painting the underside of your nail, don't forget that it needs some TLC as well! Try using a nail strengthener, like Essie's Millionails Treatment ($10), as a base coat. And to keep the color lasting, be sure to add a top coat, like Scotch Naturals' On The Rocks Top Coat ($14.99), which does exactly what the name suggests... seriously, that color won't budge for a week!

 

Though we love the sleek and sexy black and red combination shown above, the undernail trend gives you the opportunity to mix and match tons of different colors. Our tip: Be conscious of the colors you pair together—the undernail should always be lighter than the top color, so it doesn't show through. The combos we're dying to try? Black and white, lavender and gold, navy and silver, charcoal and gray, and burgundy and bronze. Or, if you want to get festive this Halloween, do a forest green nail paired with a bright orange underneath.