The first warm weekends of June are a useful reminder: sunscreen is not only for holidays or the beach. It matters during a lunch walk, a bike commute, a terrace afternoon or a few hours in the garden. The UV index is a better guide than how hot it feels, because light cloud or wind can make the sun feel harmless while UV exposure remains meaningful.
Short answer: from UV index 3, sun protection is sensible during longer exposure. SPF50 is especially useful if you burn easily, have fair or sensitive skin, want to limit pigmentation, or spend a long time outdoors.
Belgian public health information on sun risks explains that a tan gives only limited natural protection. UV radiation can cause sunburn, accelerate skin ageing and increase skin risks. Sciensano also explains that the sun rays reaching us are mainly UVA and UVB. UVB is more closely linked to burning; UVA plays a major role in long-term skin ageing.
What does the UV index mean in practice?
The UV index describes the strength of ultraviolet radiation. The higher the number, the faster unprotected skin can be damaged. In Belgium, wind and clouds can make the weather feel mild, but they do not reliably tell you how strong UV radiation is.
A practical rule of thumb:
- UV index 1-2: low risk, though daily facial SPF can still be a useful skincare habit.
- UV index 3-5: protect your skin during longer outdoor exposure.
- UV index 6-7: high protection is sensible: clothing, shade and generous sunscreen.
- UV index 8+: avoid the strongest sun where possible and combine SPF with physical protection.
SPF30 or SPF50?
SPF30 is already a strong baseline for many summer days, but SPF50 is often the safer choice if you burn easily, have fair skin, want to limit pigmentation, use retinoids or exfoliating acids, or spend a long time outdoors.
The number on the tube is only part of the story. Application matters. Many people use too little. For the face, two finger lengths of sunscreen is a practical guide. For arms, legs, neck and ears, you usually need more than you think. Reapply after sweating, swimming, towel drying or roughly every two hours outside.
UVA protection matters too
A sunscreen focused only on UVB can help prevent burning, but it is not the full answer for skin ageing. Look for broad-spectrum protection or the UVA logo on the packaging. In Europe, SPF30 and SPF50 are considered high protection, while SPF50+ is very high protection.
For daily use, many people prefer a light facial fluid and a larger milk or spray for the body. That makes sense: the texture you enjoy is the one you will actually use consistently.
Why pharmacy sunscreen can be worth comparing
Pharmacy brands often stand out through skin tolerance, texture and specific formulas: fragrance-free, sensitive-skin, oil-control, children-friendly or water-resistant. That does not mean the most expensive product is automatically the best. The right product is the one that fits your skin and that you apply generously enough.
Price matters because expensive sunscreen can make people apply less. That is the wrong trade-off. Comparing prices helps you keep good protection habits without overpaying for the same product.
Smart sunscreen buying checklist
- Choose SPF30, SPF50 or SPF50+ based on your skin and exposure.
- Check for UVA or broad-spectrum protection.
- Pick a texture you genuinely like using.
- Buy enough volume for face and body.
- Compare prices from licensed Belgian online pharmacies.
On PharmaCompare, you can compare pharmacy product prices so your summer routine does not cost more than necessary. Sunscreen only works well when you use enough and reapply it consistently.
FAQ
Should you use SPF50 when it is cloudy?
It can still be useful when the UV index is elevated or when you stay outdoors for a long time. Clouds do not block all UV radiation.
How often should sunscreen be reapplied?
About every two hours during prolonged outdoor exposure, and after swimming, sweating or towel drying.
Is SPF50 enough by itself?
No. Sunscreen works best together with shade, protective clothing, sunglasses and avoiding the strongest midday sun.
Sources
This article is based on Belgium.be information about sun risks and Sciensano background on UV radiation. This is not medical advice. If you have severe sunburn, suspicious skin marks or persistent symptoms, consult a doctor or dermatologist.