HairUWear Human Hair Color Extensions in Light Purple ($10, ulta.com).
Snazzy Lites Color Clip-in Human Hair Extensions in Playful Pink ($12, snazzylites.com).
If primary colors aren’t your thing, try this fresh spin on ombré. We created a wide bronze band by dusting a shimmery eye shadow three quarters of the way down from the crown, followed by two inches of golden hair chalk on the ends. Fair warning: This look has the least amount of staying power. The hue rubs off easily, so wear a sleeveless shirt and be prepared either to wash it out before bedtime or to cover your hair to avoid ruining your sheets.
Liquid tints can deliver a more vibrant payoff, but they can dry stiff and tangle strands. Instead of air-drying, pass a blow-dryer over locks after applying. The heat keeps them soft and crunch-free. Or brush air-dried colored hair softly and dab with leave-in conditioner to soften.
L’Oréal Professionnel HairChalk in Blue Ocean Cruise ($24, lpsalons.com for salons)