A loose network of wellness influencers on TikTok and Instagram now tells followers that sunscreen is the real danger. Most aren't doctors. Here's what they claim, and what the evidence says.
Editorial cartoon, ISCAN / HealthWatcher.net. Satire; the influencer is fictional. Animal fats and other home remedies have never been shown to protect against UV radiation.
The anti-sunscreen message comes in many forms: sunscreen is "toxic," you need unprotected sun for vitamin D, cutting out seed oils will stop you burning, or homemade and beef-tallow "sunscreens" are safer. It overlaps heavily with the wider "wellness" world that also spreads vaccine misinformation. Dermatologists spent Skin Cancer Awareness Month 2026 pushing back.
It's having an effect. In a March 2024 Ipsos survey for Orlando Health, 14% of American adults under 35 said daily sunscreen is more harmful than direct sun, 32% of all adults agreed a tan makes people look healthier, and 23% believed drinking water prevents sunburn.
MYTH"Sunscreen causes skin cancer."
FACTThe best evidence says the opposite. In the Nambour trial in Queensland, Australia, 1,621 adults were randomly assigned either to apply sunscreen daily or to use it as they pleased, from 1992 to 1996. Follow-up published in 2011 found the daily group had about half as many new melanomas, and about 73% fewer invasive melanomas. Earlier results showed fewer squamous cell skin cancers too.
MYTH"Sunscreen chemicals soak into your blood, so they must be toxic."
FACTFDA studies published in JAMA in 2019 and 2020 did find that some chemical UV filters are absorbed into the blood after heavy use. The researchers stressed that absorption does not mean harm, and that people should keep using sunscreen while more safety data are gathered. If you're concerned, mineral sunscreens with zinc oxide or titanium dioxide are an alternative.
MYTH"Sunscreen contains benzene."
FACTBenzene is not a sunscreen ingredient. In 2021 a lab found benzene contamination in some batches, mainly aerosol sprays, and Johnson & Johnson voluntarily recalled certain spray products in July 2021. That was a manufacturing problem in specific products, not a reason to give up sunscreen.
MYTH"Sunscreen will make you vitamin D deficient."
FACTStudies of real-world use have not shown that typical sunscreen use causes vitamin D deficiency; most people don't apply enough to block all UVB. If you're worried about vitamin D, it's easy to get from food and supplements without risking a burn.
MYTH"Quit seed oils (or drink more water) and you won't burn."
FACTThere is no evidence that any diet or hydration prevents sunburn. Sunburn is UV radiation damaging skin cells; only shade, clothing and sunscreen block it.
MYTH"Homemade or tallow sunscreen is natural and safer."
FACTHome recipes and "natural" oils have never been tested for SPF and give little or unknown protection. Cancer Council Australia advises against homemade sunscreens. And as our page on SPF test failures shows, even professionally made products need proper testing.
MYTH"A base tan protects you."
FACTA tan is a sign that UV has already damaged your skin's DNA. The Skin Cancer Foundation estimates a base tan gives the equivalent of only about SPF 3 to 4, nowhere near enough.
Editorial cartoon, ISCAN / HealthWatcher.net. Satire; the woman is fictional. The “up to 80%” figure is a widely cited dermatology estimate. Sun exposure is the main cause of premature skin aging: wrinkles, brown spots and leathery skin, as well as rough pre-cancerous patches called actinic keratoses.
How to spot sun-safety misinformation
The person is selling something: a "clean" product, a supplement, a course.
They say one study "proves" sunscreen is dangerous, without mentioning the trials showing it prevents cancer.
They mix sunscreen fears with distrust of vaccines, fluoride or "Big Pharma."
They tell you to "build tolerance" by burning or tanning.
This page is consumer information, not personal medical advice. If you have a new or changing mole, see a doctor or dermatologist. Last updated 2 November 2026.
