How to Choose Sunscreen: SPF, UVA and Everyday Protection
Sunscreen is one of the best things you can do for your skin, but the labels can be confusing, with SPF numbers, UVA stars and a wall of formulas. It’s simpler than it looks once you know what the ratings mean. Here’s a plain guide to choosing and using it well.
Choose broad-spectrum protection with at least SPF 30 for everyday and SPF 50 for strong sun. Check the UVA rating too, not just the SPF. Then apply generously and reapply often, since that matters as much as the number.
SPF is only half the story
SPF measures protection against UVB, the rays that burn. But UVA rays, linked to ageing and longer-term skin damage, need protecting against too. That’s why you want broad-spectrum sunscreen, and a good UVA rating (shown as stars or the letters UVA in a circle) alongside the SPF. Both matter.
What SPF number do you need?
For everyday use, SPF 30 is a sensible minimum. For strong sun, holidays, or if your skin is fair or sensitive, SPF 50 gives higher protection. Higher isn’t a licence to apply less or skip reapplying, though, so treat the number as a floor, not a free pass.
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Face, body and skin type
Body sunscreens are fine for the face, but many people prefer a dedicated facial formula that sits well under make-up and suits their skin type. Oily skin often likes a lighter, matte finish, while dry skin suits a more hydrating one. If your skin is sensitive, fragrance-light and mineral formulas are worth a look.
Application beats everything
The best sunscreen is the one you apply properly. Most people use too little, so be generous, cover all exposed skin including easy-to-miss spots, and reapply regularly, especially after swimming, sweating or towelling off. A high SPF applied thinly protects far less than the label suggests.
Ready to choose?
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Related guides
- Skincare routine for beginners to build SPF into your routine.
- Beauty buying guide for the wider picture.
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Frequently asked questions
What SPF should I use?
SPF 30 is a good everyday minimum, and SPF 50 gives higher protection for strong sun, holidays or sensitive skin. Look for broad-spectrum protection, which covers UVA as well as UVB.
What does the UVA rating mean?
SPF measures protection against UVB (which burns), while a separate UVA rating (often shown as stars or the letters UVA in a circle) covers the rays linked to ageing and longer-term damage. You want good protection against both.
How much sunscreen should I apply?
Most people use too little. Apply generously, cover all exposed skin, and reapply regularly, especially after swimming, sweating or towelling off.