Photoprotection

Abstract

Only one intervention trial found a modest reduction in naevus development confined to children with freckles, whereas several studies found a positive association between naevus numbers and the use of sunscreens.4 It was suggested that sunscreen use could encourage longer stays in the sun without protecting completely against cancer-causing radiation.3 And indeed, a more recent review showed that sunscreen use leads to longer duration of sun exposure when sun exposure is intentional, but not when it is nonintentional.5 We agree with Lautenschlager and colleagues that sunscreens are to be used as an adjunct on body areas that remain uncovered and should not be used to increase time in the sun.