The rapid spread of health-related misinformation on social media has become a growing concern for medical professionals, with TikTok recently emerging as a flashpoint for anti-sunscreen sentiment. While the vast majority of content concerning sun protection remains evidence-based, a study from the University of Alberta’s Health Law Institute reveals that anti-sunscreen videos—often characterized by conspiratorial rhetoric and fear-mongering—consistently generate higher levels of engagement than fact-based content. Researchers note that these contrarian videos leverage shock value and novelty to capture user attention, creating a viral environment where inaccurate health claims thrive despite their lack of scientific validity.
Dermatologists are sounding the alarm as this digital trend threatens to reverse decades of public health progress regarding skin protection. Experts warn that the skepticism surrounding sunscreen is fueling a dangerous movement that rejects conventional medical advice in favor of unregulated alternatives, such as using beef tallow or intentionally engaging in unprotected tanning. Dr. Adam Friedman, chair of dermatology at George Washington University, emphasizes that these practices are profoundly harmful, noting that sunscreen is a critical tool for reflecting or absorbing ultraviolet rays to prevent the development of skin cancer, a risk that far outweighs the minor benefits of sun-induced vitamin D production.
To better understand the scale of the issue, researchers analyzed approximately 1,000 TikTok videos from 2024 tagged with popular sunscreen-related hashtags. While the study found that 87% of the analyzed content promoted the use of sunscreen, the videos containing misinformation exhibited a disproportionately high level of interaction. Posts that label sunscreen as “toxic” or “carcinogenic” are inherently more likely to trigger emotional responses, leading to more likes, comments, and shares. This suggests that while most creators follow medical guidance, the small minority of creators spreading misinformation are disproportionately successful at hijacking the algorithm to spread their message.
TikTok has defended its platform, stating that it maintains strict community guidelines against health misinformation and collaborates with independent fact-checkers to remove harmful content. Despite these measures, experts like Briony Swire-Thompson, director of the Psychology of Misinformation Lab at Northeastern University, note that the platform’s engagement metrics are inherently biased toward content that is provocative or contradictory. Swire-Thompson points out that high engagement does not necessarily confirm that viewers believe the misinformation, but it does signify a dangerous trend where inflammatory health claims are consistently prioritized over nuanced, factual reporting.
The rise of these narratives arrives at a critical time for sun-safety regulation, particularly in the United States. In June, the FDA officially added bemotrizinol—a highly effective ultraviolet-blocking ingredient long used safely in other countries—to its list of permitted active ingredients after decades of administrative delay. Experts argue that as the scientific community finally gains access to better tools for skin protection, the rise of online misinformation threatens to undermine these advancements by discouraging the public from using these products in the first place, potentially causing long-term harm to public health.
Ultimately, the study serves as a warning about the volatility of public discourse on social media, where health outcomes are increasingly competing with sensationalist claims for visibility. While medical professionals continue to advocate for the proven benefits of sun protection, the ease with which users can be misled poses a significant hurdle for public health communication. Moving forward, dermatologists and researchers alike are calling for increased vigilance in identifying and contextualizing digital health misinformation to ensure that potentially life-saving medical advice is not eclipsed by the viral reach of dangerous, scientifically unsupported trends.