Booster juice

We’ve been taught to think of a good skincare regimen as a long-term investment. But sometimes the daily grind shows up most on your face. The fast fix? Boosters. These liquids—which you add to your moisturizer—contain a high concentration of active ingredients to counteract fatigue and pollution. “Like serums, they target deeper into the dermal layer than [moisturizers],” says Dr. Diane Wong of Toronto’s Glow Medi Spa. “But you only use boosters when you need to kick-start the skin.” For example:

You’re pulling major OT at work.

Brighten exhausted skin with a formula containing antioxidant-rich magnesium. Sephora Revitalizing Booster Tired Skin ($25)

Your face hates the dry fall air.

Dr. Nowell Solish, of Cosmetic Dermatology in Toronto, recommends hyaluronic acid, which attracts water to skin. Dr. Dennis Gross Clinical Concentrate Hydration Booster ($82)

You RSVP’d yes to too many Halloween parties.

Clarins Booster Detox ($40) contains anti-inflammatory green-coffee extract to mitigate the effects of those cocktails and Caramilks.

You got too much sun at the cottage.

Vitamin C or retinol will address brown spots. Another option is the herb-based MV Organic Skincare Instant Revival Skin Booster ($120).