Why is that? Well, there's actually a couple of reasons.
Unlike some chemical sunscreens, all physical sunscreens block both UVA and UVB rays.
Further, physical sunscreens do not degrade in sunlight so you do not have to reapply every two hours.
In fact, if you apply a physical sunscreen at 8am it should last pretty much all day long. All the same, it doesn't hurt to reapply if you're out there in the baking heat. In fact, Cancer Council Australia highly recommends it.
Clearly, a physical sunscreen makes sense. But you'll still have to choose one. If you're not sure how to go about experts recommend those made up of titanium dioxide and/ or zinc oxide.
"Yes, they are harder to rub in, but a better choice for many reasons, starting with the fact that they block both UVA and UVB," says Gwyneth Paltrow, who stocks this type of sunscreen via her online health and beauty store GOOP.
Of course, hats and sun-protective clothing are still needed, especially here in Australia, where we are experiencing a history-making heat wave that shows no signs of abating just yet.
You might also like to consider an umbrella or good old-fashioned shade.
Gwyneth describes hats and sun-protective outfits as 'seriously cute' and we have to agree. There are some terribly sweet options these days and they come in all shapes and sizes too.
Finally, it's a good idea to restrict your hours at the beach or by the pool to pre-10am and post 3pm.
"It should be noted that most people also look better cavorting in the waves at sunset, as opposed to high noon," adds Gwyneth cheekily.
Great choices of sun protection include Liberty Belle Superstar SPF 50+, $60, We Are Feel Good Inc Sticky Zinc, $29.95, and Invisible Zinc Face and Body Sunscreen SPF 30, $32. Of course, you will need to ensure you apply enough of your chosen sunscreen for it to be effective.
What does that look like? According to Cancer Council Australia, roughly seven teaspoons of the stuff.
That's broken down as follows:
One teaspoon for the head and neck, two teaspoons for the torso, one for each arm and one for each leg. Stay safe out there Australia. And stay young and beautiful too.