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Mineral sunscreen vs Chemical sunscreen
The short answer
Mineral sunscreens use zinc oxide or titanium dioxide; chemical sunscreens use organic filters such as avobenzone or octocrylene. Both mainly absorb UV. The FDA has proposed only the two minerals as safe and effective and wants more data on 12 organic filters, without calling them unsafe. The EU and UK allow listed filters of both kinds.
At a glance
Mineral vs Chemical Sunscreen, side by side
| Compared | Mineral sunscreen | Chemical sunscreen |
|---|---|---|
| Active filters | Zinc oxide, titanium dioxide | Organic filters such as avobenzone, octocrylene, homosalate and oxybenzone |
| How they work | Mostly absorb UV; a 2016 study measured only 4–5% reflected | Absorb UV and release it as harmless warmth |
| US status (FDA) | Proposed as GRASE at up to 25% each (2019 proposed rule; 2021 proposed order) | 12 filters need more data before a GRASE finding; the FDA says that does not mean they are unsafe |
| EU and UK status | On the Annex VI list; Great Britain allows up to 25% each, including nano forms that meet set specifications | Only filters on the Annex VI list may be used, within each filter’s conditions |
| Sensitive skin | Recommended by dermatologists for sensitive skin (AAD) | Fine for most people, though any sunscreen can occasionally irritate or cause allergy (BAD) |
| Drawbacks | Larger particles can look white or opaque; smaller particles are used to reduce this | Some filters cover part of the spectrum: avobenzone mainly absorbs UVA and breaks down quickly in sunlight unless stabilised |
How do mineral and chemical sunscreens work?
Mineral sunscreens use the inorganic filters zinc oxide and titanium dioxide; the American Academy of Dermatology (AAD) counts any sunscreen without them as chemical. Chemical, or organic, filters absorb UV radiation and turn it into harmless warmth, the British Association of Dermatologists (BAD) explains, and most sunscreens use a mix of both types.
The idea that minerals work like a mirror is only partly true. A 2016 study in Photodermatology, Photoimmunology & Photomedicine measured just 4–5% reflection across the UV range and concluded that zinc oxide and titanium dioxide protect mainly by absorbing UV; they reflect more strongly only at longer UVA and visible wavelengths. Our sunscreen filters guide explains SPF, UVA and PA ratings.
What does the FDA say about zinc oxide and titanium dioxide?
In the US, sunscreens are over-the-counter drugs. The FDA’s February 2019 proposed rule (84 FR 6204) proposed that sunscreens with up to 25% zinc oxide or up to 25% titanium dioxide are generally recognised as safe and effective (GRASE), largely because the evidence showed zinc oxide does not penetrate skin to any great extent. After the CARES Act changed the process, the FDA reissued the same proposals as a proposed order in September 2021.
The proposal found 12 organic filters, including oxybenzone, avobenzone, octocrylene and homosalate, need more safety data before they can be called GRASE. The FDA says this does not mean they are unsafe, and the AAD says the science does not show that sunscreen ingredients sold in the US harm human health. The FDA removed PABA and trolamine salicylate from its sunscreen monograph by final order on 10 September 2026 and added bemotrizinol on 10 June 2026. For imported products, see are Korean sunscreens legal in the US?
How do the EU and UK regulate sunscreen filters?
In the EU, sunscreens are cosmetics rather than medicines, regulated under Regulation 1223/2009, the European Commission says. That regulation bars any UV filter not listed in its Annex VI, or used outside that annex’s conditions, and Great Britain kept the same rule in its own version of the law.
Great Britain’s Annex VI lists zinc oxide and titanium dioxide at up to 25%, including nano forms that meet set specifications, and bars them from products that could expose the user’s lungs by inhalation. It also lists organic filters the US does not, such as polysilicone-15, which is why our Korean sunscreen rules guide explains that a sunscreen sold in Seoul or London may not be sold as one in the US.
Verdict
Which should you choose?
Choose Mineral sunscreen if
Mineral suits sensitive skin, which the AAD recommends it for, and anyone who wants the only two filters the FDA has proposed as GRASE. Expect some white cast with larger particles.
Choose Chemical sunscreen if
Chemical (organic) filters suit people who dislike a white cast, and in the EU and UK they offer a wider choice of approved filters. The FDA wants more data on them; it has not called them unsafe.
Read next
More on this on The Cast Index
Quick answers
Related questions
Is mineral sunscreen safer than chemical sunscreen?
- That has not been shown. The FDA has proposed zinc oxide and titanium dioxide as safe and effective and wants more data on 12 organic filters, but says that does not mean they are unsafe. The American Academy of Dermatology says the evidence does not show US sunscreen ingredients harm human health.
Does mineral sunscreen reflect UV?
- Only a little. A 2016 study found zinc oxide and titanium dioxide reflect about 4–5% of UV and protect mainly by absorbing it, as organic filters do. They reflect more of the longest UVA and visible light.
Which sunscreen should I use with retinol?
- The American Academy of Dermatology says retinoids can make skin more sensitive to the sun and, for sensitive skin, suggests a physical sunscreen with zinc oxide or titanium dioxide. See retinol vs retinal.
What SPF should I use?
- The American Academy of Dermatology recommends SPF 30 or higher. The British Association of Dermatologists recommends SPF 30 or above with 4 or 5 UVA stars, applied liberally and reapplied every two hours.
Sources
Where these facts come from
- US FDA — Questions and answers on over-the-counter sunscreen actions (current as of 10 September 2026) checked 22 October 2026
- US FDA — Sunscreen drug products for over-the-counter human use, proposed rule, 84 FR 6204 (26 February 2019) checked 22 October 2026
- European Commission — Sunscreen products checked 22 October 2026
- Regulation (EC) No 1223/2009, Article 14, as adopted by the EU (legislation.gov.uk) checked 22 October 2026
- Regulation (EC) No 1223/2009, Annex VI, as it applies in Great Britain (legislation.gov.uk) checked 22 October 2026
- Cole C et al., “Metal oxide sunscreens protect skin by absorption, not by reflection or scattering”, Photodermatology, Photoimmunology & Photomedicine, 2016 checked 22 October 2026
- American Academy of Dermatology — Sunscreen FAQs checked 22 October 2026
- American Academy of Dermatology — Retinoid or retinol? checked 22 October 2026
- British Association of Dermatologists — The sunscreen fact sheet checked 22 October 2026
Spotted something out of date? Send a correction with a link to the record. This page summarises public sources and is not legal, medical or financial advice.
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