Best Bet: B&B Mending Masque

Fall weather means the return of heat styling and wind-whipped locks. There are a lot of pricey hair products that claim to undo damage, but Bumble and Bumble’s Mending Masque is actually worth the splurge. (On that note, steer clear of the brand's new Straight conditioner if you’re looking for extra moisture.) The mending balm hydrates heat-fried ends and detangles, warding off rainy-day knots. Smooth it over wet hair once a week and leave in for ten minutes before rinsing. It leaves hair shiny and smooth, even after another round of blow-drying and straightening.

Bumble & Bumble Mending Masque, $37 at Sephora or online.