A recent study published in PLOS Digital Health has shed light on the complex dynamics of health information dissemination on social media, specifically regarding the public perception of sunscreen. Researchers from the University of Alberta conducted an extensive analysis of 971 highly viewed videos on TikTok across five trending hashtags: #sunscreen, #sunscreenviral, #spf, #sunscreenreview, and #sunprotection. The primary objective of the investigation was to determine how sunscreen is portrayed on the platform and to quantify how different types of content influence audience engagement in terms of views, likes, shares, and comments.
The data reveals that the vast majority of sunscreen content on TikTok—roughly 86.8%—is actually pro-sunscreen. However, the study identifies a significant discrepancy between the volume of content and the level of engagement it garners. While videos criticizing sunscreen or labeling it as “harmful” or “unnecessary” made up only a small fraction of the total content analyzed (collectively around 6%), these posts attracted a disproportionately high level of interaction. Alessandro Marcon and his colleagues observed that these controversial, often misleading claims frequently outperformed mainstream health endorsements in shares and comments.
Researchers suggest that the disproportionate attention given to anti-sunscreen claims is largely driven by the emotionally charged and controversial nature of the messaging. Because social media algorithms prioritize high engagement, content that challenges established medical consensus often spreads more rapidly than neutral or informative health advice. Marcon notes that the concern is not necessarily the sheer volume of misinformation, but the intense resonance these fringe ideas find within specific digital communities, creating a feedback loop that amplifies medically dubious claims.
Beyond the spread of misinformation, the study highlights a critical communication gap regarding the primary purpose of sunscreen. Even among the videos that advocate for its use, the messaging rarely focuses on public health. Instead, creators predominantly frame sunscreen as a foundational element of beauty and cosmetic skincare regimens. Worryingly, only 6% of all analyzed videos explicitly mentioned the well-established role of sunscreen in preventing skin cancer, suggesting that the public is being conditioned to view SPF through an aesthetic lens rather than a protective, medical one.
The findings underscore a looming challenge for public health experts who are attempting to combat health misinformation in a digital landscape that favors sensation over scientific accuracy. By failing to highlight cancer prevention as the central benefit of SPF, the creators of pro-sunscreen content are missing a vital opportunity to reinforce the health-first rationale for its application. The research serves as a warning that even when health-conscious trends emerge, they can easily become detached from the scientific urgency required to protect public well-being effectively.
Ultimately, the University of Alberta study reveals that platforms like TikTok function as double-edged swords for dermatological health. While pro-sunscreen sentiment is dominant, the tendency to favor beauty-focused messaging over cancer prevention, coupled with the viral nature of controversial health claims, presents a difficult hurdle for medical professionals. Moving forward, the authors emphasize the need for a more strategic approach to online health communication, one that ensures essential, evidence-based data regarding health risks remains prominent enough to compete with the high engagement generated by sensationalism.
