Use of Reconstructed Skin Model to Assess the Photoprotection Afforded by three Sunscreen Products having Different SPF Values against DNA Lesions and Cellular Alterations via ScienceDirect

Introduction

Both UVB and UVA rays induce biological damages in the epidermis and the dermis that contribute to photo-carcinogenesis and photoaging. In the present study, the photoprotective effect of 2 ISO standard sunscreens, P3 (Sun Protection Factor [SPF]15) and P6 (SPF40) and of an SPF50+ labeled commercial sunscreen product was tested in reconstructed skin tissues exposed to increasing doses of UV Solar Simulated Radiation (UV-SSR). UV-induced damages were evaluated using several biological markers, including DNA lesions in the presence or absence of sunscreen protection.

Method

T-Skin™ model samples (EPISKIN), composed of a fibroblast-populated dermal equivalent and a fully differentiated epidermis, were protected with the test sunscreens before being exposed to increasing UV doses.