With its tinselled trees, twinkly lights and shimmery party dresses, the holiday season is prime time to shine—and your hair is no exception. The challenge: This is also the time of year when harsh, frizz-inducing weather outside, moisture-zapping furnaces inside and excessive heat-styling can all conspire to dim your usual sparkle.

Luckily, you don’t have to hibernate until spring or break up with your favourite curler or flatiron. You can play on—then just hit reset with a new beauty game-changer that works fast to undo hair havoc, including extreme damage: Pantene Intense Rescue Shots.

The once-weekly, at-home treatment ($7.49 for a set of three) will transform dry, brittle hair after a single dose, making it soft and glossy. It works on any type of hair, even if it has been coloured or chemically treated. Consider it the next generation of deep conditioners.

What makes Intense Rescue Shots unique? It’s Pantene’s most concentrated formula and is loaded with provitamin B5 and strengthening lipids; but the delightfully creamy product won’t coat or weigh hair down, so it won’t mess with your styling. It’s also an express treatment, making it ideal for speedy pre-party prep. Just apply the contents of one tube in place of your usual conditioner, massaging from roots to ends, and then rinse well. It takes one minute flat, and voila: You’re ready to go, with hair that says you’d never let anything dull your shine.