Oral hygiene and health care. Smiling women use dental floss white healthy teeth. getty

In the age of TikTok tutorials and Instagram hacks, dental “advice” spreads fast—but not all of it is worth following. “Social media is full of trends that might look helpful but can actually harm your teeth and gums,” says Dr. Briar Voy, a dentist and prosthodontist at Amsterdam Dental Group in New Jersey and a spokesperson for Supersmile .

Knowing which tips are myths and which habits actually work can help protect your smile for years to come. Here are some of the most common misconceptions Voy says dentists wish you’d stop believing.

Myth: Purple toothpaste actually whitens your teeth.

The buzz around purple toothpaste comes down to color theory: purple sits opposite yellow on the color wh

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