The look: An emerald green half-moon mani with a naked base and metallic tips. "The luminous green feels even more luxe once it's tipped in gold," Langston says, "and the negative space at the moon is very sexy."

The products: Sally Hansen Complete Salon Manicure in Gilty Party and On Pines and Needles

The technique: Apply paper hole reinforcements (the kind you use to patch up binder paper) to the back of your fingers so that the top of the circle covers the lighter "half-moon" at the base of the nail. Apply two coats of On Pines and Needles to the nails above the reinforcements and immediately remove the stickers when finished. Allow polish to dry completely. Then, gently lay another set of reinforcements higher on the nail bed so only the tip of the nail peeks out. Paint the tips with one to two layers of Gilty Party.

The look: A "vampy" ombré nail in shades of crimson. "Keeping the ombré in the same tonal family is a new way to rock ombré," Langston says. "[It] fades from dark merlot to bright red."

The products: Sally Hansen Complete Salon Manicure in Red My Lips, Branch Out and Clear'd for Takeoff

The tips: Paint two coats of Red My Lips on nails and let dry. Pour a dollop of Branch Out onto a piece of Paper. Dab the tip of a damp wedge sponge (the kind you use to apply foundation) in a generous amount of the polish. Lightly apply it to the upper half of each nail, dabbing outward slowly so the color gradually gets more intense toward the nail tip. Let dry. The finish may be a bit bumpy because of the texture of the sponge, so paint nails with two to three layers of Clear'd for Takeoff.

(All images courtesy of Paintbox.)