Can kitchen oils replace sunscreen? Strange Health investigates the anti-sunscreen trend

Can kitchen oils replace sunscreen? A Strangly Health investigation

The Conversation's Strange Health podcast investigates social media worries about sunscreen, examining whether kitchen cupboard ingredients like beef tallow, coconut oil, or olive oil can substitute for tested sun protection. Host Katie Edwards and co host Dan Baumgardt speak with Charareh Pourzand, a University of Bath professor, and unpack the science behind UV filters, hormonal activity, and vitamin D. The episode also highlights a 2026 TikTok study showing most videos promote sunscreen use, yet criticism tends to receive more engagement, affecting public messaging.

• Most sunscreen related TikToks promote sunscreen use rather than avoidance
• Some UV filters can be absorbed into the bloodstream, but this does not prove harm from normal use
• Mixing oils or beef tallow into homemade suncare products is risky due to lack of testing
• Vitamin D can come from diet or supplements, not from deliberately exposing skin to harmful UV

Overview

The Conversation's Strange Health podcast returns with a critical look at a viral wellness trend that pushes back against conventional sunscreen. In this episode, host Katie Edwards and GP Dan Baumgardt explore how social media conversations about sun protection intersect with science, regulation, and public health messaging. The episode features Charareh Pourzand, a University of Bath professor specializing in how sunlight affects skin, who helps dissect common concerns about sunscreen ingredients and the possibility that some UV filters may be absorbed into the bloodstream and exhibit hormonal activity in laboratory settings. The conversation emphasizes that such laboratory observations do not automatically translate into real world harm, and regulators continue to scrutinize the evidence while underscoring the established danger of ultraviolet radiation to skin cancer risk.

Why the anti-sunscreen movement matters

The episode sets the scene by examining the online anti-sunscreen narrative, which often contrasts tested sunscreens with kitchen cupboard alternatives such as beef tallow, coconut oil, or olive oil. The host and guest discuss the appeal of DIY approaches in social media culture, the temptation to seek simple, affordable remedies, and the risk that misinformation can spread faster than robust scientific consensus. Pourzand points out that even if an ingredient has a measurable UV absorption in a lab, the absence of properly formulated and tested sunscreen means the actual protection your skin receives is unpredictable at best and dangerously under protected at worst. The program also touches on related topics such as sunbeds, the idea of a base tan, and research into how sunlight can release iron inside skin cells, which may amplify damage when UV exposure occurs.

Science in context: UV filters, Vitamin D and regulation

The discussion includes a closer look at UV filters used in conventional sunscreens and the regulatory context in the United Kingdom. Pourzand notes that the UK has restricted one UV filter, 4 MBC, after a safety assessment, illustrating that safety reviews and regulatory action remain a part of safeguarding public health. The episode reinforces two crucial points about vitamin D: while UVB exposure enables vitamin D production in the skin, sunscreen use does not justify exposing oneself to unprotected UV light when vitamin D can be obtained safely through diet and supplements. The guests emphasize that protecting the skin from ultraviolet radiation is still supported by extensive evidence linking UV exposure to skin cancer risk, and formulations are designed to balance protection with realistic consumer behavior, including application and reapplication practices.

Homemade sunscreen as a gamble: formulation and testing gaps

Pourzand explains why mixing kitchen fats such as beef tallow into a homemade sunscreen is a gamble. Even if certain ingredients absorb some UV radiation, the reliability and consistency of protection cannot be guaranteed without proper formulation and testing. The podcast stresses that sun safety depends on coverage against both UVA and UVB radiation, adequate quantity, and regular reapplication. The discussion also considers the broader context of sun safety, including the use of sunbeds, the misconception of protected tanning, and the possibility that some kitchen ingredients may introduce other risks to skin or overall health.

Practical sun protection guidance

Both hosts emphasize the importance of evidence based sun care: select tested products that provide broad UVA and UVB protection, apply them generously, reapply as needed, and consider SPF requirements for different outdoor durations and climates. The episode also discusses whether SPF 50 is necessary for short UK winter outdoor trips and highlights the importance of balancing sun protection with vitamin D needs via diet or supplements when appropriate.

Audience engagement and further exploration

The episode invites listeners to share bizarre viral trends for future investigation and reinforces that reliable science, not social media sensationalism, should guide personal health decisions. The Conversations Strange Health series, hosted by Katie Edwards and Dan Baumgardt, remains a platform for examining unusual health and wellness trends with scientific scrutiny. A transcript is available via Apple Podcasts and Spotify for those who want to explore the science in more detail.