Efficacy Of Spf70 Sunscreen To Protect Skin Against Visible Light And Air Pollution

Background: Sunscreens are known to protect from sun damage mainly caused by UVA/UVB lights, however the effects of visible light (VL) have been extensively investigated and correlated with skin pigmentation. Also, chronical exposition to pollution, mainly particulate matter (PM), contribute to the photoaging and skin pigmentation being a possible emerging etiologic agent for the development of melasma. Considering that, the development of dermo-cosmetic able to protect skin form VL and PM are essential to maintaining skin health. Thus, the aim of this study was to evaluate the efficacy of a facial sunscreen SPF 70 formulation containing vitamin C derivative, carnosine, melanin analogue, iron oxides and AHR antagonist to protect skin cells against VL and PM damage for the improvement of photodamage. Ex vivo studies was conducted to evaluate the impact of PM and VL on keratinocytes viability and melanin production. The sunscreen containing vitamin C, carnosine, melanin analogue, iron oxides, and AHR antagonist presented VL protection with a transmission of visible light spectrum reduction by 67.93%.