"The Sunscreen 'Backfire' Controversy" - "The Risk of Applying" vs "The Risk of Exposure" - The Little-Known Relationship Between Skin Cancer and Sunscreen

"The Sunscreen 'Backfire' Controversy" - "The Risk of Applying" vs "The Risk of Exposure" - The Little-Known Relationship Between Skin Cancer and Sunscreen

1. Introduction: Why the "Sunscreen Danger Theory" Has Resurfaced Now

In May this year, the results of an independent SPF test conducted by the Australian consumer group Choice spread on TikTok, sparking widespread suspicion that "sunscreen might not only be ineffective but also harmful." The hashtag #SunscreenGate garnered 10 million views in 24 hours, with critical comments flooding brand official accounts.


2. Scientific Consensus: The Protective Effect Remains Unshaken

Stanford Medicine concluded in a June 2025 review that "regular sunscreen use significantly reduces the incidence of skin cancer."


Randomized controlled trials tracked for over 10 years in Australia and the latest meta-analysis published in March this year show similar results.


3. Absorption and Ingredient Risks: The Debate on "Safety"

The FDA confirmed that six ingredients, including oxybenzone, reach the plasma and has requested additional data from companies starting in 2024.
However, the FDA itself has stated that "absorption does not equal danger" and is evaluating thresholds and long-term effects.


4. Benzene Contamination Scandal: The Pitfall of "Product Quality"

Since 2022, aerosol SPF products from multiple brands have been recalled due to benzene contamination. In July 2025, the FDA issued the latest alert calling for the prevention of recurrence across pharmaceutical manufacturing.


The contamination is due to solvent residue in the manufacturing process, not the design of the sunscreen itself, but a quality control issue.


5. The Frenzy and Misinformation on Social Media

Choice's verification video went viral as "SPF fraud," causing brands other than TikTok's "chosen four products" to lose credibility.
DW's fact-check concluded that "there is no evidence supporting an increased risk of skin cancer," but its reach was only one-tenth of the viral posts.


The core of the spread lies in the social media dynamics where "fear and anger" go viral more than complex science.


6. Expert Perspectives: A Message from Dermatologists

The American Academy of Dermatology (AAD) issued a statement this year saying, "Despite questions about ingredients, sunscreen remains a cornerstone of prevention."
Meanwhile, to address consumer concerns, products adopting only mineral-based (zinc oxide, titanium dioxide), fragrance-free, and non-nano formulations are rapidly increasing.

7. How to Use It: A Practical Guide

  • Amount: Two fingertips (about 1g) for the face, 30mL for the whole body.

  • Timing: Apply 15 minutes before going out and reapply every 2 hours. Reapply after sweating or swimming.

  • Selection: Check for SPF30 or higher, PA+++ or higher, and broad-spectrum (UVA/UVB) labeling approved in Japan. Consider non-chemical options for sensitive skin.

  • Combination Strategies: Use hats, long sleeves, shade, and sunglasses for total protection.

8. Conclusion: "Zero Risk" is an Illusion

Indeed, challenges such as ingredient absorption and manufacturing defects remain. However, UV-induced DNA damage can increase cancer risk even with a single leisure exposure. Latest research and long-term data indicate that "appropriate sunscreen + physical shading" is the most rational choice. We should choose actions based on science rather than posts that incite fear.


Appendix: References and Key Social Listening Data

Related Articles