Make Any Beauty Treatment Last

Make It Last 3 Weeks

Haircut

A typical layered style keeps its shape and looks healthy for about six weeks, but it's easy to fake a fresh cut. "Smoothing frayed ends mimics the look of a trim," says Janet St. Paul, senior stylist at Butterfly Salon in New York City and Palm Beach. Use a strengthening shampoo and conditioner that contains wheat or silk proteins to help repair damage (try John Frieda Frizz-Ease Rehydrate Moisture-Binding Deep Conditioner, $5.99, drugstores). After blow-drying, smooth splits with a leave-in conditioner that contains glycerin or silicone.

Pro Eyebrow Shaping

"Tweeze the unruly hairs above your brows to keep the shape of your arches clean past the average three weeks," says Anastasia Soare, eyebrow artist and owner of the Anastasia Beverly Hills Salon. Use slant-tip tweezers, like RED by Kiss Mini Size Slant Tip Tweezer with Travel Pouch, $3.79, walgreens.com, to prevent pinching your skin, and pluck carefully along your top brow lines and between brows. If you're trying to grow your brows in, conceal regrowth under arches with a light-diffusing highlighter (try ModelCo Luminosity Highlighting Serum, $26, sephora.com).