A favorite of Los Angeles-based cosmetic dentist Jon Marashi, this paste skips traditionally used preservatives and instead uses ingredients that absorb and bind to the compounds that stain your teeth, so once you rinse, your teeth are left bright and shiny. “I love the Hello formula because it’s gentle and safe for enamel and everyday use,” he says. “It’s also free of peroxide, dyes, sulfates, parabens, triclosan, preservatives, and gluten as well as artificial sweeteners and flavors. The activated charcoal whitens the teeth naturally.”

• Key ingredients: Fresh mint, coconut oil, and activated charcoal

One satisfied customer writes: “I tried this because I didn’t like all the additives in other toothpaste. One thing I noticed right away was how white it made my teeth. It’s really strange the toothpaste is black but when you’re finished and you look in the mirror your teeth are white.” — PortraitArtist