Povidone-iodine is a topical antiseptic used to prevent infections in wounds, but TikTok users are claiming that applying it to acne can reduce irritation and dry out blemishes.

While there is little scientific evidence to support this hack, a small pilot study suggest iodine could treat acne due to its antiseptic and anti-inflammatory properties.

Some have left reviews for the iodine brand Betadine, commenting that their skin “has never been better.” Others say their doctors suggested the product for their acne-prone skin.

Povidone-iodine can have side effects, so do a patch test before applying it to your face. Stop using it if you experience swelling, oozing, burning, or other signs of irritation.

Topical iodine is generally safe for skin use, but avoid contact with the eyes and be cautious of staining. If your acne persists or worsens, it’s best to consult a professional.