“We start and end all of our [services] with breathing techniques while inhaling a soothing scent,” says Danielle Gamble, the lead aesthetician at the Sisley-Paris boutique in New York City. “This really increases a sense of calm and also decreases stress. Take three deep breaths in through your nose, fill your belly, and exhale through your mouth.” Gamble recommends lavender oil, which can be found at your local drugstore, or anything with rose.