SUNCARE & SPF

The SPF (Sun Protection Factor) is a measure of UVB protection. Protection against UVA is shown by either a star rating or by the PPD score (Pigment Protection Factor). A circled UVA logo on the sunscreen bottle means that the sunscreen meets EU requirements for UVA protection. When choosing a sunscreen, it is important to look for a high SPF value, such as 30 or 50+, and the circled UVA logo. This means that the product will give the best possible protection against sunburn and skin cancers, and will also protect against UVA radiation which causes skin aging" explains Dr Hiva Fassihi, One Welbeck Skin Health & Allergy London.

For further information around this read our expert SPF guide for every skin type.

The longevity of sunscreen depends on various factors, including the SPF level and your activities. As a general rule, sunscreen typically lasts for about two hours but if you're swimming or sweating, it may wear off more quickly. The number of times your sunscreen should be reapplied over the course of the day is dependent on your activity level and the amount of sun exposure. For example, on a dark wintery day in the office, application of sunscreen in the morning as part of your skin care routine is likely to suffice. On a bright sunny day, with outdoor activity planned at lunchtime, it's recommend to reapply your sunscreen 20-30 minutes before going out. If you plan to spend the whole day out during the spring and summer months, reapplication is recommended every 2-3 hours.

Yes, sunscreen does expire. Most sunscreens have an expiration date printed on the packaging, typically ranging from one to three years after the product is manufactured. It's important to check the expiration date before using sunscreen, as expired sunscreen may not provide adequate protection against UV rays. Using expired sunscreen can also lead to skin irritation or sunburn. To ensure maximum effectiveness, it's best to replace sunscreen once it has expired and store it in a cool, dry place away from direct sunlight.