We all know how important it is to wear sunscreen every day. And if you've read any of our skincare blogs, you'll know I harp on about it… a lot! But have you ever wondered whether being so diligent with your SPF could mean you're missing out on something your body actually needs?
I'm talking about vitamin D. Our bodies rely on sunlight to produce it, so are we doing ourselves a disservice by being so careful in the sun? And is it really possible to get enough vitamin D while keeping our skin protected?
Well, when it comes to sunshine, sunscreen and vitamin D, there's a little more to the story than you might think! Keep reading as we discuss whether daily sunscreen really affects your vitamin D levels and how to get the balance right.
First things first, why do we need Vitamin D?
We hear so much about vitamin D, but what does it actually do? Quite a lot, as it turns out! It helps our bodies absorb calcium, keeps our bones and muscles healthy, and plays a role in supporting our immune system. And as we get older, maintaining healthy vitamin D levels becomes particularly important for bone health.
Here's the interesting part! Unlike most vitamins, our bodies can make vitamin D themselves, simply by exposing our skin to sunlight.
Which brings us to the million-dollar question. If sunshine helps us produce vitamin D, what happens when we're slathering our skin in sunscreen every day?
Does wearing sunscreen stop your body producing Vitamin D?
Now for the question we've all been wondering about!
Technically, yes. Sunscreen filters UVB rays, which are the same rays our skin needs to produce vitamin D! So, it makes sense to assume that wearing SPF every day could leave us short on this essential vitamin.
But…..research suggests that regular sunscreen use has little effect on vitamin D levels in everyday life. Why? Because no sunscreen blocks 100% of UV radiation, and most of us still get some incidental sun exposure throughout the day.
So, while sunscreen can reduce vitamin D production under controlled conditions, wearing it in everyday life doesn't automatically mean you'll become deficient.
And that's a pretty good reason to keep applying your SPF!
Do we really need 20 minutes of sunshine every day (without wearing sunscreen)?
You've probably heard that spending 15–20 minutes in the sun without sunscreen is essential for getting enough vitamin D. But here's the thing. There's actually no magic number of minutes that works for everyone!
How much sunshine you need depends on your skin type, where you live, the season and, importantly, the UV Index.
During an Australian summer, when UV levels are high, most people can maintain adequate vitamin D levels through everyday outdoor activities, even while practising sun protection.
In southern parts of Australia during winter, when the UV Index is below 3, spending some time outdoors with uncovered skin may help maintain vitamin D levels. Sun protection generally isn't required at these low UV levels, although there are exceptions.
And here's something worth remembering, UV levels aren't the same as temperature. A cool or cloudy day can still have a high UV Index, so don't rely on how sunny it looks outside!
So, before you set a 20-minute timer and head outside without your sunscreen, remember that more sun isn't necessarily better! Too much UV exposure increases your risk of skin damage and skin cancer and we all know that.
What if you're not getting enough Vitamin D though?
Not everyone gets enough vitamin D, even in sunny Australia!
People who spend most of their time indoors, older adults, people with darker skin and those with certain medical conditions may be at greater risk of deficiency.
And while foods such as salmon, eggs and fortified products contain vitamin D, getting enough from diet alone can be tricky!
If you're concerned about your vitamin D levels, speak to your GP. They can assess whether testing or supplementation is appropriate, rather than you deliberately increasing your unprotected sun exposure.
So, how do we get the balance right?
You don't have to choose between healthy vitamin D levels and protecting your skin.
A few simple habits can help:
Keep SPF part of your morning skincare routine. When the UV Index is 3 or above, choose broad-spectrum SPF50 or SPF50+ and reapply every two hours when outdoors, or after swimming or sweating.
Check the UV Index, not the temperature. UV radiation can be high even when it's cloudy or cool!
Enjoy getting outdoors. Walking the dog, gardening or heading out for coffee can all contribute to everyday sun exposure.
Think beyond sunscreen. Hats, sunglasses, protective clothing and shade are important parts of sun protection too!
Don't guess if you're concerned. Your GP can help you determine whether your vitamin D levels need attention.
And while sunscreen isn't always necessary when UV levels are low, there's no need to abandon your daily SPF habit, particularly if protecting your skin against premature ageing is a priority.
If you're looking for a sunscreen you'll actually enjoy wearing every day, explore our sun care collection. After all, finding an SPF you love makes protecting your skin that much easier!
Need help choosing? Our guide to finding the best sunscreen for your skin is a great place to start.
Vitamin D is essential, but so is protecting your skin from UV damage.
For most Australians, it's possible to maintain healthy vitamin D levels without deliberately spending time in the sun unprotected.
So keep enjoying the outdoors, make SPF part of your daily skincare routine and remember: getting enough vitamin D doesn't have to come at the expense of healthy, protected skin.
