First of all, it pays to understand what SPF actually means. Dr Sophie Momen, consultant dermatologist at One Welbeck, explains: “SPF [sun protection factor] is a measure of how long it takes the skin to turn red in areas where sunscreen has been applied, compared to skin with no sunscreen, after it has been treated with UVB radiation. Therefore, SPF 50 means it takes the skin 50 times as long to turn red in the presence of sunscreen, compared to without.” As the name states, Bondi Sands SPF50+ Face Sunscreen Lotion offers UV protection of SPF 50. Given that The British Association of Dermatologists, a professional membership body for dermatologists, recommends using a product with at least SPF 30, this would suggest a suitable level of protection.
