Mineral vs Chemical Sunscreen: What's the Difference?

Mineral or chemical sunscreen? Both are designed to protect your skin from UV, but they take different approaches. Broadly speaking, mineral sunscreens use ingredients such as zinc oxide and titanium dioxide to create a protective layer that reflects and scatters UV, while chemical sunscreens absorb UV and convert that energy into heat.

At MyPure, we've made the choice simple: every sunscreen we sell uses non-nano mineral UV filters. We don't sell chemical sunscreens or sunscreens containing nano mineral filters.

Here's what that difference means, why we prefer mineral SPF and what to look for when choosing sun protection for your skin.

What is mineral sunscreen?

Mineral sunscreen uses naturally occurring minerals – principally zinc oxide and titanium dioxide – as its UV filters.

These mineral particles form a protective layer on the surface of the skin. Broadly speaking, they work by reflecting and scattering UV radiation away from the skin, although mineral filters can also absorb some UV.

Zinc oxide is particularly useful because it offers protection across both UVA and UVB wavelengths, which is why you'll find it at the heart of many modern broad-spectrum mineral sunscreens.

Titanium dioxide is another established mineral UV filter and is sometimes combined with zinc oxide to create effective broad-spectrum sun protection.

What is chemical sunscreen?

Chemical sunscreens use a different group of UV filters. Rather than mineral ingredients such as zinc oxide and titanium dioxide, they use chemical filters.

Broadly speaking, these filters work by absorbing UV radiation and converting the energy into heat, which is then released from the skin.

Chemical sunscreens can be formulated with very light, transparent textures, which is one reason they're so widely used in mainstream facial and body sunscreens.

At MyPure, however, we've chosen to specialise in mineral sun protection because it fits naturally with our wider approach to natural and clean beauty.

Why choose mineral sunscreen?

There's a lot to like about a good mineral SPF. Modern formulations can provide effective broad-spectrum protection while fitting comfortably into a natural skincare routine.

What does non-nano mineral sunscreen mean?

You may have noticed the words non-nano appearing on natural mineral sunscreens.

Mineral filters such as zinc oxide and titanium dioxide can be produced in different particle sizes. Very small nanoparticles can help make mineral sunscreen appear more transparent on the skin.

Non-nano sunscreen uses mineral UV filters that don't fall within the applicable definition of nanomaterial.

MyPure has chosen to take a consistent approach: all of the sunscreens we sell use non-nano mineral filters.

So if you're specifically looking for non-nano zinc oxide or titanium dioxide sun protection, you don't have to check every sunscreen in the MyPure range individually.

Is mineral sunscreen good for sensitive skin?

Mineral sunscreen is often a good place to start if your skin is sensitive or easily irritated.

Zinc oxide-based formulas are particularly popular for sensitive skin, and you'll find mineral SPF used in products designed for adults, children and delicate skin.

It's still worth looking at the complete formula. Sunscreen contains much more than its UV filters, so fragrance and other ingredients may also influence how well an individual product suits your skin.

If your skin is particularly reactive, choose a formula designed with sensitive skin in mind and patch test when appropriate.

Does mineral sunscreen leave a white cast?

This is probably mineral sunscreen's best-known drawback.

Zinc oxide and titanium dioxide are naturally white minerals, so some mineral sunscreens can leave a visible cast on the skin. This can be particularly noticeable on deeper skin tones.

Fortunately, modern mineral SPF has come a long way from the thick white sunblock many of us remember.

Better formulation and dispersion of the mineral particles can create a much more wearable finish, while tinted mineral sunscreens use pigments to help the product blend more naturally with the skin.

There's still variation between products, so if white cast is important to you, look at the individual sunscreen rather than assuming all mineral formulas will look the same.

Mineral vs chemical sunscreen at a glance

How to choose the right sunscreen

Mineral or chemical isn't the only decision that matters. Once you've decided which type you prefer, you still need to find the right level of protection and a formula you'll actually enjoy wearing.

Mineral sunscreens to try

One of the best things about today's mineral sunscreens is the choice. You can now find everything from daily facial SPF to high-protection sticks and skincare-rich formulas – all without switching to chemical UV filters.

Why does MyPure choose mineral sunscreen?

MyPure has specialised in natural and organic beauty since 2004, so mineral sun protection is a natural fit for us.

We like the straightforward approach of using established mineral UV filters such as zinc oxide and titanium dioxide, and we've chosen to go one step further by making non-nano mineral SPF the standard across our entire sunscreen range.

That means you don't have to study every sunscreen label to work out whether it meets that standard. If it's a sunscreen sold by MyPure, it's mineral and it's non-nano.

Many of our formulas also combine their mineral UV filters with plant oils, botanical extracts, antioxidants and other skincare ingredients, bringing sun protection comfortably into a natural skincare routine.

For us, that's the attraction: effective sun protection using mineral filters, combined with the thoughtful natural formulations you'd expect from the brands we choose.