If you suffer from hyperpigmentation, dark spots, or acne scarring, please allow us to introduce you to your new best friend. Volcanic Elixir ($39) is an overnight treatment made from nut extracts of the tamanu fruit from Polynesia. Though it, quite frankly, stinks, more refined noses might appreciate its mineral-y scent, and once you see how it revives your complexion after a few weeks, you'll want to bathe in it.