Is sunscreen bad for you?
Written by AI from saved sources. A script checks every quote word for word, and a second AI compares each claim with its source. How we work and corrections
Finding sunscreen ingredients in blood does not show that sunscreen is bad for you. But some ingredient concerns remain unresolved. A newer trial raised concerns about vitamin D.
Checked against: FDA, European Commission’s SCCS, QIMR Berghofer, October 2026.
Why people believe it
A 2021 review reported that studies of sunscreen ingredients entering blood reached headlines and social media. A 2021 review suggested that FDA’s 2019 proposal may have added to existing confusion. The review linked that existing confusion to ingredient concerns and local bans. That is the authors’ explanation, not proof of why every concerned person thinks that way. There have also been recalls because certain spray sunscreens contained benzene.
“It gets into your blood”
Yes, under the conditions tested. A 2019 trial measured blood levels of sunscreen ingredients in 24 healthy participants. Sunscreen was applied at two milligrams per square centimetre over 75% of their body surface. It was applied four times daily for four days. Blood levels of sunscreen’s sun-protecting ingredients exceeded 0.5 nanograms per millilitre for all four tested products. This was after four applications on day one. The authors said more studies were needed to find out what this meant for health. Their results did not indicate people should stop using sunscreen.
“It disrupts your hormones”
There are signs worth studying, but no settled answer in this assessment. In 2021, the European Commission’s Scientific Committee on Consumer Safety (SCCS) assessed benzophenone-3, a sunscreen ingredient. It found some studies suggesting that benzophenone-3 could affect hormones. But there was insufficient evidence to decide whether it disrupts the hormone system. Its safety assessment also depended on use. Benzophenone-3 used to filter ultraviolet (UV) light at 6% in body creams was not considered safe. The same was true for propellant sprays or pump sprays. Up to 6% in face cream, hand cream and lipstick was considered safe.
“It blocks vitamin D”
The newer evidence deserves attention. Queensland Government’s October 2022 page said sunscreen had no big effect on vitamin D levels. QIMR Berghofer reported different findings in September 2025. Its Sun-D trial involved 639 people who were not regular sunscreen users. Half were instructed to use sunscreen labelled SPF50+ (SPF means sun protection factor) daily for a year. This excluded winter in southern regions. After 12 months, vitamin D deficiency (too little vitamin D) was reported in 46% of that group versus 37% of the comparison group. These figures come from the institute’s report of the trial. They do not establish the effect of every sunscreen strength or way of using it.
“Does it even prevent skin cancer?”
A 2016 Cochrane review compared daily versus occasional sunscreen use. It found no clear difference in how many people developed two types of skin cancer. These were basal-cell and cutaneous squamous-cell skin cancers. It covered one Australian trial of 1,621 people followed for 4.5 years. The evidence was rated low certainty, meaning future studies could change the result. It does not establish that the two routines work equally well.
Thinking tool: absorbed is not the same as harmful
The blood tests measured exposure to sunscreen ingredients. Their authors said more study was needed to understand what this meant for health. FDA also said information about ingredients entering blood was not enough on its own to conclude they were unsafe. Missing safety data also leave questions open.
For other claims, ask: did the study measure contact with a substance, or an actual harmful outcome?
Official positions, with dates
FDA, 2021 proposal: requested more data for twelve ingredients, without concluding they were unsafe. 10 September 2026: issued a final order removing PABA and trolamine salicylate from the list of ingredients permitted in over-the-counter sunscreens marketed under the sunscreen OTC monograph. FDA says such orders cannot take effect earlier than a year after they are issued. It knew of no US sunscreens then sold with either ingredient.
Cancer Council Australia, 16 September 2025: supported Australians continuing to use sunscreen as one of five forms of sun protection after Sun-D. FDA, October 2026: recommends using sunscreen regularly, as directed, alongside other protection. It recommends sunscreen labelled “broad spectrum” and SPF 15 or higher.
What people also ask
Is it healthier to not use sunscreen?
The trial measuring sunscreen ingredients in blood did not support stopping sunscreen use. FDA says sunscreen used as directed with other protection helps prevent sunburn and/or reduce skin-cancer risk.
Is it bad to wear sunscreen every day?
Sun-D raises a vitamin D concern about its daily SPF50+ routine, which excluded southern winters. It does not establish that every daily routine is harmful.
Does sunscreen have any negative effects?
Sun-D’s vitamin D finding and SCCS’s ingredient concerns about specific products deserve attention.
Which sunscreen to stay away from?
FDA advises against using sunscreens recalled because they contained benzene.
Check it yourself (5 minutes)
- Open FDA’s 2026 sunscreen regulatory Q&A.
- Find “does not represent a conclusion”.
- Read that sentence: does insufficient safety data mean FDA declared the ingredients unsafe?
What you should have found
“The 2021 proposed order (OTC000008) does not represent a conclusion by the FDA that the sunscreen active ingredients proposed as having insufficient data are unsafe for use in sunscreens.”
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