Nearly 95% of Viral 'Glass Skin' TikToks Misleading, EADV Study Finds

Research presented at EADV 2026 found almost 95% of viral Korean skincare TikTok videos contained misleading claims and none were made by dermatologists.

Research presented at the European Academy of Dermatology and Venereology (EADV) Congress 2026 found that almost 95% of viral Korean skincare and 'glass skin' TikTok videos contained at least one potentially misleading claim. Researchers analyzed 38 top videos across five search terms in May 2026, using a neutral account to minimize algorithmic bias, and rated all of them unreliable or less reliable on the Global Quality Scale and modified DISCERN. Dermatology Times reports the figure as 94.7%.

The surprise is not just the misleading claims but the total absence of basic safety advice. Lead author Dr. Maria Lúcia Paysano said only one of the 38 videos mentioned irritation risk, only two addressed sun protection, none mentioned contact dermatitis risk and none recommended consulting a dermatologist. Not a single video in the sample was produced by a dermatologist, and none cited an external source or reference.

Nearly 82% of the videos were created by nonphysician influencers, 11% by beauty brands and 8% by other beauty content creators, according to the study. Other findings: 84% failed to account for different skin types, 45% promoted excessive combinations of active ingredients without safety guidance and 32% promised instant results. Personal Care Insights notes the 'glass skin' trend promotes elaborate multi-step routines with layered actives like double cleansing, essences and sheet masks.

A separate observational study presented at the same congress documented 94 patients who developed new or worsened skin conditions after using products promoted on social media. Dermatology Times reports chemical exfoliants with AHAs or BHAs were implicated in 34% of cases, followed by over-the-counter retinoids (27%), vitamin C serums (14%) and niacinamide products (11%). Irritant contact dermatitis was the most common reaction at 42%, with 63% of patients using more than three active ingredients at once.

Dr. Paysano warned that following these routines without individualized guidance may contribute to irritation, over-exfoliation, acne flares or skin barrier disruption, especially when multiple actives are combined. Fashion Times UK adds a commercial dimension: TikTok Shop says K-beauty searches in the UK surged 125% in 2025, and the average basket value for K-beauty brands is nearly 35% higher than the skincare overall average, so flawed guidance travels alongside heavy retail pressure.

The researchers stressed that Korean skincare itself is not the problem — the concern is how principles like gentle cleansing, hydration and barrier care get transformed into viral, one-size-fits-all routines without safety information. Dr. Paysano urged consumers to be cautious of content promising instant or universal results and said dermatologists should join these conversations to make evidence-based skincare accurate, accessible and engaging rather than dismissing trends outright.