a frustrated boy applying sunscreen on his face

Can you tan with sunscreen on?

Last updated: September 16, 2026
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It's one of the most common questions we hear, especially when the sun's out and the outdoors is calling.

Short answer? Yes, a little. Cancer Council Australia's view is that sunscreen, applied properly, stops the tanning process. Most people don't apply it the way it's tested, and that's usually where the colour comes from.

A diagram showing melanin production - the tanning process

What is a tan?

That colour change is your skin's response to UV damage. When UV radiation hits your skin, your body starts producing extra melanin, the pigment that gives your skin its colour, to try and shield your cells from further damage. That golden colour? It's your skin saying it's been hit and is trying to protect itself.

Does sunscreen stop tanning?

No sunscreen on the planet can filter 100% of UV rays. It's not possible.

An SPF 50+ sunscreen, applied correctly, filters over 98% of UVB radiation. In Australia, sunscreens are regulated by the TGA as therapeutic goods, and an SPF 50+ label has to test at SPF 60 or higher. That protection is serious.

But the little that gets through is still UV. Over a long day outdoors, especially under Australian conditions where the UV Index regularly hits Extreme, that small fraction adds up. It's enough to trigger your skin's melanin response over time.
That's why you might still pick up a bit of colour even when you've been diligent with your sunscreen. You're tanning, just much, much slower.

Can you still tan with SPF 50 on?

Yes, but slowly. According to Cancer Council Australia, SPF 50 filters about 98% of UVB and lets around 2% through. Over a long day in strong sun, that small share can still add colour, and more gets through when the sunscreen goes on thinly.

SPF on the label UVB filtered UVB getting through
SPF 15 about 93% about 7%
SPF 30 about 96.7% about 3.3%
SPF 50 about 98% about 2%

Under TGA rules, an SPF 50+ label means the sunscreen tested at SPF 60 or higher. Australian labels can't go past 50+, so SPF 70 and SPF 100 won't appear on a tube here. In the UK the same number is usually called factor 50.

The SPF number mostly measures UVB. UVA plays a part in tanning too, which is why broad spectrum matters, and UVA vs UVB covers the difference. Zinc sunscreens are held to the same SPF test, and zinc oxide mainly absorbs UV the way other filters do, so the table applies to them as well. The full comparison is in SPF 30 vs SPF 50.

a woman reapplying sunscreen on the beach

Why am I still tanning with sunscreen on?

It usually comes down to how the sunscreen goes on rather than the number on the label. Cancer Council Australia's advice centres on how much to use, when to apply it and how often to top it up. It's easy to fall short on one of those without noticing.

  • Not enough of it: Cancer Council Australia puts a full adult body at about 35 mL, roughly seven teaspoons. A thinner layer gives less protection than the SPF on the label.
  • Put on too late: Cancer Council suggests applying it about 20 minutes before heading outside.
  • Not topped up: The advice is every two hours, and again straight after swimming, sweating or towelling off. There's more detail in how often to reapply sunscreen.
  • Missed spots: Ears, the back of the neck, the tops of the feet and the hairline or part tend to get skipped.
  • An old tube: Sunscreen past its expiry date may not give the protection on the label. Does sunscreen expire?
  • Long days in high UV: A full day in the garden adds up, even with good habits.

Can you tan when the UV Index is low?

Tanning is less likely when UV is low, but the UV Index measures how quickly UV can damage skin, and it isn't a tanning guide. According to Cancer Council Australia, sun protection is recommended once the Index reaches 3

UV Index Level
1-2 Low
3-5 Moderate
6-7 High
8-10 Very High
11+ Extreme

The Bureau of Meteorology issues daily sun protection times for whenever the UV Index is forecast to reach 3 or higher. The times vary by season and location, and they're listed in the free SunSmart app and on the BoM website.

Thin or patchy cloud doesn't stop UV, so an overcast day can still reach 3 or more. Shade helps, but not completely. Cancer Council NSW says good-quality shade cuts UV by up to 75%, and some of the rest bounces off sand, water and concrete. That's why colour can still build under an umbrella.

Does sunscreen help you tan faster?

No. Sunscreen slows tanning down. The myth probably comes from how skin looks when it hasn't burnt first: the colour can seem more even, which makes it look like a "better" tan.

Some tanning oils and lotions carry a low SPF, and a low SPF lets through far more UVB than SPF 50+. At SPF 4, about a quarter of UVB gets through.

As for tanning with sunscreen on, there isn't a safe way to do it, and sunscreen isn't made for it. It's there to reduce the risk of sunburn while you're outside for other reasons.

closeup of tanned skin

Is it safe to tan with sunscreen on?

We need to be straight with you here. The goal of sunscreen isn't to help you get a "safe" tan. There's no such thing.

Cancer Council Australia says any tan is a sign of skin damage, and that UV damage adds to the risk of skin cancer. Properly applied SPF 50+ lets through only a small share of UVB, which reduces the risk of sunburn.

Getting a bit of incidental colour over a summer of cricket, gardening, or beach trips while wearing sunscreen is one thing. Deliberately tanning is another. We make products for the first scenario: for a life that's meant to be lived outdoors.

What about fake tan?

Fake tan colours the outer layer of skin. According to Cancer Council NSW, it doesn't protect the skin cells underneath from UV. Some self-tanners contain SPF, but that protection only lasts a short time after applying, so a fake tan still needs sunscreen over it outdoors. Commercial solariums are banned in Australia.

So, can you tan with sunscreen on?

Yes, a little. Worn correctly and reapplied every two hours, it keeps most of the UVB off your skin.

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