Laboratory testing of sunscreens on the US market finds lower in vitro SPF values than on labels and even less UVA protection.

ABSTRACT:

Background

New research has attributed increased significance to the causal link between ultraviolet A (UVA) radiation and immunosuppression and carcinogenesis. In the United States, sunscreens are labeled with only their sun protection factor (SPF) and an imprecise term "broad-spectrum protection." Sunscreen marketing and efficacy evaluations continue to be based primarily on skin redness (sunburn) or erythema. We sought to evaluate the ultraviolet (UV) protection offered by common sunscreen products on the US market using laboratory-measured UV-absorption testing and comparing with computer-modeled protection and the labeled SPF values. This approach enables an investigation of the relationship between the labeled SPF and measured UVA protection, a factor that is ignored in curre

SUBMITTER: Andrews DQ 

PROVIDER: S-EPMC9298345 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature