If you’re having trouble keeping up with trending skincare products and deducing whether they’re worth incorporating into your routine, I don’t blame you. But one ingredient that’s gone viral on TikTok is worth paying attention to: . It’s a soothing, potent antimicrobial — a “natural disinfectant” — that’s found in our body’s white blood cells, according to , a board-certified dermatologist at in New York City.

hypochlorous acid