Mikaela Shiffrin's Must Haves Include a Pair of Cool-Kid Sneakers She's Loved Since Age 9

If you can trust anyone for a winter-proof skincare rec, it's someone who spends her career on icy slopes. This Romi Apothecary Queen of the Winter Facial Oil ($47) is made by a first-generation Asian-American, woman-owned business. "It's a more-or-less handmade product," Shiffrin says. And it's really good. "It's the one thing that I love to travel with for winter and dry and harsh conditions," she says.

Pro tip: This oil is made with Minnesota-grown marshmallow root, which has soothing, softening, and moistening properties; sea buckthorn extract, a powerhouse skin-care ingredient that promotes collagen production and is rich in vitamin C; plus, antioxidant-rich cold-pressed fruit and seed oils, many of which are certified organic. Layer on oil as the final step in your skin-care routine at night.