Bring the beach home “Basking in a warm sea salt bath with magnesium and vitamin D is an at-home way to replicate a day of ocean play,” says Nadine Artemis, founder of the beauty line Living Libations and author of the book Renegade Beauty. “After salt, magnesium is the most abundant ion in ocean water,” explains Artemis, whose devotees include Julianne Moore, Lisa Bonet and Sophie Grégoire Trudeau. “Magnesium salt is made from seawater, and soaking in a bath with these salts boosts the body’s magnesium stores and is a superb muscle and mind relaxant.” Artemis suggests adding 16 ounces of sea salt or four to eight ounces of magnesium salt (magnesium chloride) to running bath water. Afterwards, she massages in her SunDew Transdermal Vitamin D Crème, a topical application of vitamin D3 to boost sun-kissed skin." 8 foolproof ways to beat the end-of-summer blues