At By Sarah, we believe that caring for your skin begins with understanding it. Whether you’re just beginning to explore SPF or already a daily wearer, knowing the difference between mineral and chemical sunscreens can help you choose a formula that not only protects but truly supports your skin.

Here’s everything you need to know – gently explained, and always with your skin’s wellbeing in mind.

What are Mineral and Chemical sunscreens?

Both types of sunscreen protect your skin from the sun’s ultraviolet (UV) rays, but they do so in different ways.

Mineral sunscreens (also known as physical sunscreens) use active mineral ingredients like zinc oxide or titanium dioxide to form a physical barrier on the skin, reflecting UV rays away before they can penetrate.

Chemical sunscreens, on the other hand, use organic (carbon-based) compounds such as avobenzone, octinoxate, or oxybenzone. These ingredients absorb UV radiation, convert it into heat, and release it from the skin.

Which sunscreen type is better for sensitive skin?

There’s a common belief that mineral sunscreens are always the best option for sensitive skin due to their low reactivity. But sensitivity isn’t one-size-fits-all, and neither is sun protection.

The reality is that modern sunscreen innovation has made it possible to create ultra-gentle, high-performance formulas that are specifically developed for sensitive and reactive skin, regardless of whether they’re mineral or not.

What matters most is how the sunscreen is formulated.

Our Serene Daily SPF 50+ is a broad-spectrum sunscreen powered by biodegradable, COSMOS-approved filters that provide very high UVA and UVB protection. It has been dermatologically tested and clinically approved for use on sensitive skin, including conditions like eczema, rosacea, dermatitis, and psoriasis.

Why is Serene Daily SPF 50+ a good option for sensitive skin?

We created our Serene Daily SPF 50+ with one goal: to provide high-level protection without compromising comfort. It’s a broad-spectrum sunscreen that blends effortlessly into the skin – no white cast, no greasy feel – just calm, invisible coverage you’ll enjoy wearing every day.

Here’s what makes it uniquely supportive for sensitive skin:

Dermatologically Approved for Sensitive Skin

In an independent, third-party clinical study, Serene Daily SPF 50+ received the highest possible classification for skin compatibility and suitability for sensitive skin. This validation reinforces our commitment to creating products that truly care for stressed or delicate skin.

Trusted, Expert-Led Formulation

Our Daily SPF 50+ has undergone rigorous third-party laboratory testing to ensure safety, stability, and compliance with regulatory standards. Behind every bottle is over two years of dedicated development led by a team of chemists, pharmacologists, and dermatologists working together to ensure every ingredient is kind, effective, and considered.

Free from Common Irritants

You won’t find benzophenones, camphor derivatives, or cinnamate derivatives in this formula, filters that are often linked to irritation in sensitive individuals.

Soothing Plant-Based Antioxidants

Enriched with ginseng, apple, and peach extracts, it helps to calm the skin and shield against UV-induced stress, all while supporting hydration and softness.

Elegant, Everyday Wearability

Its silky, breathable texture absorbs quickly and wears beautifully under makeup, making it easy to wear every day, even in warmer weather.

Truly Inclusive Finish

Its invisible application ensures a clear, non-chalky finish across all skin tones, so everyone can enjoy sun protection that feels good and looks natural.

Is chemical sunscreen safe for long-term use?

Yes. All sunscreens sold in the UK must meet rigorous safety standards set by regulatory bodies such as the Scientific Committee on Consumer Safety (SCCS) and Cosmetic, Toiletry and Perfumery Association (CTPA). Chemical sunscreens are extensively tested for safety, stability, and efficacy.

The NHS and British Association of Dermatologists both confirm that using sunscreen daily significantly reduces the risk of skin cancer, premature ageing, and sun damage, regardless of whether it’s mineral or chemical.

The most important thing is to choose a product that is:

• Broad-spectrum (protects against UVA and UVB)

• SPF 50 or higher

• Comfortable and enjoyable to wear daily

What’s the best sunscreen for everyday use?

The best sunscreen is the one you’ll want to use every single day.

That’s why we formulated Serene Daily SPF 50+ to be more than just protective, it’s a daily ritual of self-care. It blends into your skincare routine as easily as your favourite moisturiser and works beautifully under makeup.

It’s the kind of product you’ll reach for without thinking, and that’s exactly what good SPF should be.

Does mineral sunscreen have any drawbacks?

While mineral sunscreens are a wonderful option for many, they can sometimes leave a white residue on the skin. This is especially noticeable on deeper skin tones or when applied in generous amounts. They also tend to be thicker in texture, which some may find less pleasant for everyday wear.

At By Sarah, we know how important it is to feel comfortable and confident in your skin. That’s why we created an SPF that doesn’t just protect, it fits seamlessly into real life, every day.

What should I look for in a sunscreen if I have sensitive skin?

Here’s a quick checklist when choosing a sunscreen for sensitive skin:

✅ Broad-spectrum coverage (UVA + UVB)

✅ SPF 30 or higher

✅ Free from common irritants and fragrance

✅ Clinically tested for skin compatibility

✅ Lightweight, breathable texture

✅ No white cast (especially important for darker skin tones)

Serene Daily SPF 50+ ticks every box.

Why is daily SPF so important?

In the UK, we often think cloudy skies mean our skin is safe, but up to 80% of UV rays still reach the skin, even on overcast days. So whether it’s sunny, grey, or somewhere in between, UV protection remains essential, every single day.

Wearing SPF daily is one of the kindest things you can do for your skin. It:

• Helps prevent premature ageing – softening the appearance of fine lines, wrinkles and sun-induced pigmentation

• Supports even skin tone – reducing the risk of dark spots and discolouration

• Protects long-term skin health – significantly lowering the risk of skin cancer

And because UV damage builds up gradually, it’s not just those beach-day burns that matter, it’s the everyday moments. The morning walk, the light through your window, the school run. Consistent protection helps preserve your skin’s calm, comfort, and confidence.

Think of SPF as your daily shield: gentle, invisible, always there, just like us.

Final Thoughts: Mineral or Chemical – Which should you choose?

When it comes to sunscreen, the best choice is the one that feels right for you. There’s no perfect answer, just what your skin needs to feel protected, comfortable, and at ease.

Serene Daily SPF 50+ is the result of expert-led innovation, years of research, and unwavering dedication to sensitive skin. It’s a formula grounded in science, clinically tested, and created to protect without compromise.

So whether you’re walking the dog, sipping coffee by the window, or feeling the sunshine on your face after a long winter, let your daily SPF be a small, consistent act of care. Not just for your skin, but for your peace of mind.

And if it helps you feel calm, confident, and comfortable in your own skin, that’s the right one for you.

Still wondering what’s right for your skin?

Skincare is personal, especially when you’re navigating sensitivity, sun exposure, and what feels safe. If you’re looking for a little more clarity, these thoughtful reads from the By Sarah Journal are here to guide you:

• The Science Behind Our Daily SPF 50+: Safe, Effective & Clinically Approved – A closer look at how Serene Daily SPF 50+ is formulated with care, backed by science, and designed for sensitive skin.

• Discover 5 Top Tips on SPF for Sensitive Skin – Simple, practical ways to protect your skin with confidence and ease.

• The Ultimate Summer Skincare Routine – A calm, complete ritual to keep your skin glowing and comfortable through the sunniest season.

Still have questions or need a hand choosing what’s right for you? We’re always happy to help.

Send us a note at care@bysarahlondon.com, we’d love to support you.

Note: For more detailed information on sun safety and sunscreen use, you can refer to the NHS guidelines on sunscreen and sun safety.

 

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