Confession – before I worked in beauty, I did not know that SPF came in more than one formula. Shocking, perhaps, but TBF science has never been my strong suit... If this information is new to you, too, fear not! With the help of two skin experts, I’m on hand to share everything you need to know about both mineral SPF and chemical SPF, from the differences between them to which is best for your skin type. Oh, and feel free to spread the word – SPF world domination is the goal.
What is mineral sunscreen?
Not to state the obvious, but mineral sunscreens (also known as inorganic or physical sunscreens) contain minerals – the most common being zinc oxide and titanium dioxide. Aesthetics doctor and member of the Royal College of Surgeons, Dr David Jack, explains: “These ingredients sit on the surface of the skin, creating a thin film protective barrier that reflects and scatters UV rays". This stops the rays from penetrating more deeply into the skin, where they cause damage, which is why mineral sunscreens are also commonly referred to as ‘sunblock’.
Our mineral sunscreen faves
Fenty Skin Hydra Vizor Invisible Moisturiser SPF 30
SUMMER FRIDAYS ShadeDrops Broad Spectrum SPF 30 Mineral Milk Sunscreen
What is chemical sunscreen?
Chemical sunscreens use organic, carbon-based compounds such as avobenzone, oxybenzone, and octinoxate. Dr Shereene Idriss, Board-certified dermatologist and Cosmopolitan Contributing Skin Expert, says that “these compounds absorb UV radiation and convert it into heat, which is then released from the skin.”
Our chemical sunscreen faves
Byoma Moisturizing Gel-Cream SPF 30
e.l.f. Cosmetics Suntouchable Invisi-Stick SPF 50
How to know which is right for you?
First things first, neither mineral nor chemical SPF is better than the other, nor will one provide ‘more’ protection than the other. As Dr Idriss so rightly puts it: “The best sunscreen is the one you use consistently every day.”
That said, choosing between them largely depends on your skin type, lifestyle, and personal preference. “If you have sensitive or reactive skin, mineral sunscreens may be a better option due to their slightly lower risk of irritation,” Dr Jack says. On the other hand, Dr Idriss says that chemical sunscreens may be preferential for those with darker skin tones as they have a “lighter texture, making them easier to blend and less likely to leave a white cast.”
How to identify whether your SPF is mineral or chemical
You can identify the type of sunscreen by checking the active ingredient list on the packaging or online. Just as both doctors tell me, if it lists zinc oxide or titanium dioxide, it’s a mineral sunscreen. For chemical sunscreens, look for ingredients like octinoxate, octocrylene, or oxybenzone. Keep in mind, though, some SPF formulas are hybrid, combining both mineral and chemical filters for broader protection and better cosmetic appeal. “These are often labelled as ‘combination’ [or broad spectrum] sunscreens,” says Dr Jack. We love a confusing loophole *dun dun dunnnn*.
The pros and cons at a glance
Mineral sunscreen
Pros:
- Gentle on sensitive skin
- Effective immediately after application
Cons:
- Can leave a white cast
- May feel heavier or less cosmetically elegant
Chemical sunscreen
Pros:
- Feel lightweight on the skin
- Do not leave a white cast
Cons:
- Requires 15-20 minutes to become effective after application
- Can occasionally cause irritation on sensitive skin/eyes
Lia Mappoura (she/her) is the Beauty Writer at Cosmopolitan UK, with over four years of experience reporting across the brand's print, social, video and digital platforms. Lia covers everything from emerging trend analysis to viral celebrity hair and makeup moments, making her an expert at spotting the season’s next big beauty look (before it takes over social media feeds).
In 2025, she was named The Rising Media Star at the Love Perfume Awards with The Perfume Shop, recognised for her outstanding digital fragrance content and for building genuine authority within the space. She is passionate about challenging outdated beauty stereotypes, championing inclusive representation in beauty, and educating readers on the trends, products and conversations shaping the industry today. Follow her on Instagram or find her on LinkedIn.
