Mineral vs chemical sunscreen: which is right for your skin?

Skincare & beauty ·Published 10 October 2026 ·Reviewed 10 October 2026

Written by the Priceline Pharmacy Pacific Fair team. Reviewed by Jason Markey, BPharmSci, MPharm, Owner and Pharmacist.

General health information from a registered pharmacist. It doesn’t replace advice from your own pharmacist or doctor.

Both types work. Cancer Council says physical (mineral) and chemical sunscreens can both be broad-spectrum and water-resistant, and both deliver effective protection. The differences are in the filters they use, how they look and feel on your skin, and which skin types tend to find them more comfortable.

So the best sunscreen for you is the one you’ll apply generously every day and reapply. On the Gold Coast, that means SPF50 or SPF50+, broad spectrum and water resistant, in whichever type suits your skin.

How do mineral and chemical sunscreens work?

You’ve probably heard that mineral sunscreens sit on top of your skin and bounce UV away, while chemical sunscreens soak it up. The science is a little different. Cancer Council explains that sunscreens protect your skin by primarily absorbing, and sometimes reflecting, UV radiation.

• Mineral (physical) sunscreens contain particles of minerals such as zinc oxide and titanium dioxide. According to Cancer Council, they primarily absorb UV and also reflect some of it. DermNet notes these filters were previously thought to work by reflecting or scattering UV, but they mainly work by absorbing it.
• Chemical sunscreens contain synthetic filters that absorb UV radiation and convert it into heat, which is then released from the skin. Cancer Council notes they are usually invisible when you apply them.

DermNet describes zinc oxide and titanium dioxide as chemically inert and safe, with broad-spectrum UVA and UVB coverage.

Which type suits sensitive skin, breakouts, rosacea or kids?

Sensitive skin

DermNet suggests looking for a hypoallergenic or low-irritant sunscreen. In its advice for babies’ skin, it notes that zinc oxide and titanium dioxide may be less likely to cause skin irritation than chemical sunscreens. Reactions don’t only come from the active ingredients: DermNet says an allergic reaction to sunscreen can be caused by a fragrance, a preservative or a sunscreen chemical. A fragrance-free mineral formula is a sensible first try. Test any new sunscreen on a small patch of skin, such as your inner forearm, before using it all over.

Rosacea-prone skin

DermNet calls UV the most significant environmental trigger for rosacea, and suggests mineral (zinc oxide or titanium dioxide) sunscreens, which may be better tolerated than chemical ones. It also notes that cosmetics with a green tint can help minimise the appearance of redness. For time outdoors, choose SPF50 or SPF50+.

Oily or breakout-prone skin

DermNet’s advice for oily or acne-prone skin focuses on texture rather than filter type: choose a lighter base, such as a gel or an alcohol-based lotion, or a product labelled non-comedogenic. Our sunscreen buyer’s checklist has more on matching texture to your skin and the weather.

Kids

DermNet says mineral sunscreens are preferred for children because they’re not irritating and give good broad-spectrum protection. Choose one you can apply easily and generously, and patch test it first. Remember that sunscreen is only one part of sun protection: when the UV Index is 3 or above, slip on clothing, slop on sunscreen, slap on a broad-brimmed hat, seek shade and slide on sunglasses.

Babies under six months need a different approach. Read our guide to baby sun protection, or ask a pharmacist before using any sunscreen on a young baby.

What about white cast and tinted sunscreens?

Mineral sunscreens can leave a white cast. DermNet notes that micronised (ultrafine) zinc oxide and titanium dioxide are easier to apply, look better on the skin and leave less white residue.

Tinted sunscreens are another option. DermNet explains that they contain zinc oxide, titanium dioxide and iron-based pigments, and unlike many sunscreens, they also protect against visible light. That can be useful if your skin is prone to pigmentation, and a tint blends into your skin tone rather than leaving a white film. Our beauty advisors can help you find a shade that suits you.

Are sunscreen ingredients and nanoparticles safe?

Sunscreens sold in Australia are regulated as therapeutic goods by the TGA, which has reviewed the safety of both types of filter.

• Nanoparticles. The TGA’s review of zinc oxide and titanium dioxide nanoparticles found that they either don’t penetrate, or only minimally penetrate, the outer layer of the skin. It concluded that neither is likely to cause harm when used in sunscreens as directed. Cancer Council agrees that research shows nanoparticles are safe when used as directed.
• Chemical filters. In 2025 the TGA published a safety review of seven common chemical filters. It found five of them were low risk and unlikely to cause any significant toxicity in the body, and it recommended regulatory controls to restrict the concentration and use of two others, homosalate and oxybenzone.

If you’d rather avoid particular ingredients, check the active ingredients on the label, or choose a mineral formula. Either way, skipping sun protection isn’t a safe trade under Gold Coast UV.

Is ‘reef safe’ sunscreen a real thing?

Some places, including Hawaii, have banned sunscreens containing certain chemical filters, such as oxybenzone and octinoxate, because of concerns about coral reefs. You’ll also see “reef safe” and “reef friendly” on some sunscreen labels.

Treat those claims with care. There’s no agreed Australian standard for what “reef safe” means, and under Australian Consumer Law businesses must be able to back up environmental claims. The ACCC, Australia’s consumer watchdog, has taken action over reef claims it alleged couldn’t be supported.

The practical takeaway: a reef claim on its own doesn’t tell you much. Check the active ingredients, and make sure the sunscreen you choose does its main job of protecting your skin.

How can our team help?

Our beauty advisors can help you compare mineral, chemical and tinted formulas side by side, so you can find one you’ll happily wear every day. Find out more about our skincare and sun care advice at Pacific Fair. Our pharmacists can help if your skin reacts to sunscreen or you’re choosing one for a child. If you’re still deciding on a number, see our guide to SPF30 vs SPF50+.

When to see a pharmacist or GP

• A sunscreen stings, itches or causes a rash. Stop using it and bring it in so we can suggest an alternative. If reactions keep happening, DermNet notes that patch testing (arranged through your GP or a dermatologist) can identify the ingredient responsible.
• Your rosacea, eczema or acne flares up, even with gentle products.
• You need sun protection advice for a baby under six months.
• You notice a spot or mole that is new, changing or looks different from your others. Our in-store Help Medical GPs are one option.

This article is general information only and isn’t a substitute for personal advice from your doctor or pharmacist. Always read the label and follow the directions for use. If symptoms persist or you’re worried, talk to your pharmacist or GP. In an emergency, call 000.