While there is a kernel of plausibility about why it might be considered helpful — including that toothpaste contains ingredients like baking soda, hydrogen peroxide, alcohol, and menthol, all of which may cause drying and therefore help shrink active pimples — the risks outweigh the benefits, and here’s why.
May Cause Irritation and Dryness
May Impact Inflammation and Worsen Breakouts
The cause of acne is multifactorial, driven by a buildup of skin cells, C. acnes bacteria, oil production, inflammation, hormonal factors, and genetics.
Toothpaste may possibly worsen this process by clogging pores, says Hollmig, although there isn’t much research to prove this happens. Plus, skin barrier breakdown triggers inflammation. This can contribute to a cycle of acne.
May Increase Risk of Scarring
May Raise Perioral Dermatitis Risk
“Perioral dermatitis is a complicated disease, and there are many causes,” says Dr. Hooper, including topical steroid use, chewing gum, and dental fillings.
Still, the last thing you want to do is irritate this rash, which toothpaste can do. If you suspect that using toothpaste to brush your teeth may be the cause of these rashy, pimplelike bumps, she recommends trying a toothpaste free of common irritants like sodium lauryl sulfate, cinnamon, and mint for four weeks to see if it helps.
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