How much sunscreen should you use per cm² of skin?
A 0.5MG B 1MG C 1.5MG D 2MG
While you’re all over the slip-slapslop memo, scientists at King’s College London reckon we’re still tripping up – by not coating the white stuff on thick enough. What that means? We often get only 40 per cent of the SPF we’re expecting. Struggling to picture that 2mg? Chances are it means doubling what you currently use.