Why daily sun protection matters
UV radiation is present all year round, including on cloudy days and in winter. You don't always notice it, but your skin does respond to it. UV radiation plays a role in sunburn, in visible skin ageing such as fine lines and loss of firmness, and in pigmentation, and it is an important risk factor for skin cancer.
So sun protection isn't a summer product but a fixed step in your morning routine. In a large randomised trial, the skin of adults who used sunscreen every day showed fewer signs of ageing after just over four years than that of the group who used it at their own discretion. The benefit lies above all in consistency.
Sunscreen is only one part of sun protection. Seeking shade, clothing, a hat and sunglasses also matter when you spend longer outdoors.
UVA and UVB: what's the difference?
Sunlight contains different types of UV radiation. For your skin, two matter most:
- UVB is mainly responsible for sunburn and redness. It is strongest in summer and around midday.
- UVA penetrates deeper into the skin and contributes to skin ageing and pigmentation. UVA is fairly constant throughout the year and largely passes through glass, such as a car window or a window at home.
Not burning does not mean your skin isn't receiving UV radiation. That is why protection against both types matters.
Besides UV, visible light also plays a role for some skin types, especially with pigmentation and melasma. More on that below.
SPF30 or SPF50: what does the number actually mean?
SPF stands for sun protection factor. The number mainly tells you about protection against UVB, so against sunburn. The higher the number, the more UVB radiation is blocked.
In percentages, the difference between SPF30 and SPF50 seems small, but if you spend longer outdoors, have fair or sensitive skin or pigmentation, that extra margin can be worthwhile. No sunscreen blocks all radiation. That is why sun products in the EU may not claim to offer complete protection.
Good to know: the SPF value is measured in a laboratory using a generous amount of product, 2 milligrams per square centimetre of skin. If you apply less, you also get less protection than the label states.
UVA protection and broad spectrum: what to look for
Because SPF is mainly about UVB, it is wise to check the UVA protection as well. A product that protects against both is called broad spectrum.
In Europe, you can recognise good UVA protection by the UVA logo in a circle. It means the UVA protection is at least one third of the stated SPF. So don't just look at the SPF number, but also at that logo or the mention of UVA and UVB protection.
Mineral, organic and hybrid filters
UV filters capture radiation before it can affect the skin. Broadly, there are three types of formula:
- Mineral filters, such as zinc oxide and titanium dioxide. They are often comfortable for sensitive skin. Older formulas could leave a white cast; modern and tinted versions are usually far less visible.
- Organic filters, also called chemical filters. They often allow light, transparent textures that work well under make-up.
- Hybrid formulas combine both types of filter for broad protection and a pleasant texture.
One type is not inherently better or safer than the other. UV filters in European sun products are assessed by law, and maximum concentrations apply to some filters. More important than the type of filter is choosing a product your skin tolerates well and that you enjoy using every day.
Which SPF suits your skin?
For daily, high protection
Looking for a daily SPF50 that feels light and also suits sensitive skin? Dr. Schrammek Solar+ Protect Fluid SPF50+ is a fragrance-free, very light fluid with a hybrid filter system. According to the manufacturer, it suits all skin types and leaves no sticky film. You apply it as the last step, over your own day cream, and you can reapply it during the day.
With pigmentation or melasma
Pigmentation darkens under UV radiation and, in some skin types, under visible light too. So choose a broad-spectrum SPF50 and use it every day, all year round. For melasma, dermatologists also often recommend a tinted sunscreen: the iron oxides in tinted formulas also protect against visible light.
PUR 4-in-1 Skin Tint Mineral SPF50 is a tinted mineral sun protection with zinc oxide as its filter and iron oxides in the tint. According to the manufacturer, the formula is fragrance-free and non-comedogenic. Please note: the formula also contains encapsulated retinol. Choose a shade that matches your skin, and you'll be happy to wear it every day.
With rosacea or sensitive skin
With rosacea, sun and heat can trigger or worsen redness. Daily broad-spectrum protection of at least SPF30 is then an important part of your routine. Choose a fragrance-free formula, apply it without rubbing and remove it in the evening with a gentle cleanser. Read more in our article on the skin barrier.
With oily or acne-prone skin
People with oily skin often skip SPF for fear of shine or clogged pores. Yet sun protection is especially valuable here: dark marks can remain after inflamed blemishes, and UV can make them more visible. Choose a light, mattifying formula that is non-comedogenic.
Dermalogica Clearing Defense SPF30 is a light, mattifying day cream with broad-spectrum SPF30 for shiny or acne-prone skin. The formula also contains fragrance components. If your skin reacts to those easily, a fragrance-free SPF is a calmer choice.
With dry or mature skin
Dry or mature skin often needs more comfort. You can keep using your trusted, richer day cream and apply a light SPF50 over it, such as the Solar+ Protect Fluid. Let the cream absorb first. Read more about the role of creams in hydration and protection.
Want to compare all options? Browse our facial sun protection.
Sunscreen, day cream with SPF or make-up with SPF?
- A dedicated sunscreen is made to protect. You can apply it generously, which makes it the most reliable base.
- A day cream with SPF is practical for days you mostly spend indoors. Do use enough product to get the protection stated on the label.
- Make-up with SPF is a nice extra, but you almost never apply enough of it to reach the stated SPF. So see it as a supplement, not a replacement.
Wear make-up and want to top up during the day without starting over? A mineral powder SPF is handy. Jane Iredale Powder Me SPF30 Dry Sunscreen is a colourless, fragrance-free powder sunscreen with titanium dioxide in a brush, applied over your make-up. Use it as an extra layer over your regular sunscreen, not as your only protection.
How much to apply and when to reapply
The most common mistake is using too little product. A few practical tips:
- Use a generous amount for face, neck and ears. In doubt? Apply two thin layers.
- Apply sunscreen as the last step of your morning routine, after cleansing, serum and cream, and before make-up.
- Reapply when you spend longer outdoors: roughly every two hours, and always after swimming, heavy sweating or towelling off.
- Don't forget the edges: hairline, ears, neck, décolleté and your lips.
Working indoors all day, away from the window? Then applying well once in the morning is often enough. If you go outside for longer during the day, top up your protection.
Common SPF mistakes
- Only using SPF when the sun is out. UVA is also present on cloudy days and passes through glass.
- Relying on make-up with SPF as your only protection.
- Applying too little product or spreading it into a very thin layer.
- Not reapplying during a long day outdoors.
- Skipping SPF while using active ingredients. Retinol and exfoliating acids can make the skin more sensitive to the sun. That is exactly when daily protection matters.
- Choosing a product you don't enjoy wearing. The best sunscreen is the one you use every day.
Once you apply SPF, don't forget to remove it in the evening. How to do that gently is explained in gentle cleansing. Want to support your daily protection further? Also read the role of antioxidants in skincare.
When is personal advice worthwhile?
Are you torn between textures, do you have pigmentation, rosacea or skin that reacts to many sun products? Or do you use retinol or acids and aren't sure how best to combine them with SPF? Then it helps to look at your skin and routine together.
If you notice a spot or mole that changes, grows, bleeds or doesn't heal, always have it checked by your GP or a dermatologist.
Sun protection as a daily habit
Good sun protection doesn't have to be complicated. Choose a broad-spectrum SPF30 or higher, preferably SPF50 with pigmentation or longer time outdoors, in a texture that suits your skin. Apply it generously, top it up when you're outside for long and make it a fixed step, in winter too.
That way you protect your skin every day, and that is exactly where the difference is made.
