Dermatologists Reviewed 38 Viral 'Glass Skin' TikToks. 36 Had a Misleading Claim.

In May 2026, dermatology researcher Maria Lucia Paysano opened a blank TikTok account. No watch history, no likes, no followers. She searched five Korean skincare terms, 'glass skin' among them, and let the app serve up whatever it would show a stranger. Her team pulled the top-ranked results, 38 videos after cutting duplicates and ads, and scored each one against a dermatology checklist built for exactly this job.

Thirty-six of the 38 contained at least one misleading claim, the team reported at the European Academy of Dermatology and Venereology Congress in Vienna on September 30. Eighty-four percent ignored that skin types differ from one person to the next. Forty-five percent pushed combinations of active ingredients with no warning about layering them. Thirty-two percent promised results overnight.

Only one of the 38 videos mentioned irritation risk. Two mentioned sunscreen. None mentioned contact dermatitis, and none suggested seeing a dermatologist before starting. Eighty-two percent came from non-physician influencers, 11 percent from beauty brands, and not one from a dermatologist.

What happens when people copy the routine

A second team, led by dermatologist Ouissal Hormi, tracked 94 patients who showed up with new or worsening skin problems after trying products or routines they found on social media. Forty-eight percent had copied a full routine, not just a single product. Sixty-three percent were layering more than three active ingredients at once.

Forty-two percent developed irritant contact dermatitis. Twenty-eight percent saw their acne get worse. Twelve percent had a rosacea flare, 11 percent developed dark spots that lingered after the irritation faded, and 7 percent had chemical burns. The ingredients behind most of the damage were familiar ones: AHAs and BHAs in 34 percent of cases, over-the-counter retinoids in 27 percent, vitamin C serums in 14 percent, niacinamide in 11 percent.

“Many patients were reproducing complex routines involving several active ingredients simultaneously, often based on non-medical influencer advice.”

This isn't the first TikTok skincare study to find this

This is not an isolated finding. A 2025 study of 100 TikTok posts about LED light therapy masks, using the same DISCERN quality tool, found that videos from influencers and non-physician creators scored far lower on reliability than videos made by physicians, and that promotional content outnumbered genuine education. Dermatology researchers have now run close to the same test on TikTok content more than once, with the same result each time: the accounts with the most reach are rarely the ones trained to flag a bad reaction before it happens.

Both new studies were presented at the same congress and bundled into one press release, which is most of what is circulating online right now. Neither has gone through journal peer review yet, and the video sample is small, 38 posts pulled in a single month on a single platform. The two studies also were not linked to each other. The 94 patients were not shown to have watched any of the 38 videos in the first study, so the line from a specific clip to a specific chemical burn is inference, not documentation, even though the findings were presented side by side. No response from TikTok or from any of the creators whose videos were studied appears in the reporting so far.

'Glass skin' as a search term is not going away. It still returns a wall of serums and six-step tutorials, the same kind of results the researchers pulled into a blank account in May. What the study adds isn't the news that skincare influencers exist, everyone already knows that. It's a number: zero of the 38 creators were dermatologists, and patients are now showing up in clinics having found that out the hard way.