You don’t want to reach right for the heaviest moisturizer. “Back to my wardrobe analogy, you don’t put on a winter coat come fall—you ease into it with sweaters, then jackets, until you need that super heavy coat in winter,” Lizzy says. Rose de Mai Cream "is a great transition moisturizer because It’s nourishing yet lightweight in texture." Olivia likes to incorporate restorative serums into her routine to hydrate and plump without weighing it down. She layers Blue Light Protection Hyaluronic Serum (to prep for digital screen time) with Radiance Elixir for its skin-awakening effects and instant glow, then turns to Bio Lifting Serum+ at night for its deep penetration and restorative line-fighting powers.

To help target sunspots, Blanc Gardenia Brightening Essence contains garden cress and chinese cabbage root to help erase visible pigmentation. Lizzy’s post-summer woe is oil build-up around her nose and mouth; she uses Detox Clay Mask on those areas to rebalance, then applies Gold Recovery Mask on her cheeks and forehead to help soothe redness and firm—“plus it gives my skin a beautiful glow,” she says.

Tiptoe, don’t leap. After a summer of barely-there coverage, Olivia starts with Just Skin Tinted Moisturizer, a tinted moisturizer loaded with skin-soothing botanicals; then, if her skin is uneven, she’ll dab on Future Skin. “It’s oil free and 60 percent water—hydrating and gentle for sensitive skin—and can be worked in a very sheer way or built up for more coverage,” she says. “It’s an ideal transition foundation.” Lizzy, meanwhile, wears Real Skin+ on spots as needed all summer, but in the  fall she goes back to applying Future Skin all over. “I welcome the even finish it gives my skin,” she says, “’plus the aloe, chamomile, and arnica infused into the formula help my sensitive skin transition into windier months by toning down any visible irritation.” She adds a drop of Radiance Elixir into her foundation “for an extra radiant look.”