A recent inquiry by CBC Marketplace has discovered discrepancies between the SPF ratings on sunscreen labels and the actual protection offered. This revelation raises concerns for consumers who rely on sunscreen for sun protection.
CBC Marketplace conducted an investigation by sending a popular SPF 50 sunscreen to five accredited laboratories in Canada and the U.S. to analyze its SPF accuracy. The results from the laboratories varied widely, indicating SPF numbers of 34, 50, 60, 44, and 15 for the same product.
The testing process focused on SPF determination rather than the specific product. Similar studies have highlighted the common variability in sunscreen testing outcomes. Experts, including Brian Diffey, a photobiology professor, expressed alarm over the inconsistent SPF readings and emphasized the need for clarity in sunscreen protection.
Health Canada, responsible for sunscreen regulation in Canada, did not provide comments on the testing outcomes presented by CBC Marketplace. The investigation shed light on the intricacies of SPF testing methods, highlighting the reliance on human volunteers and the subjective nature of SPF evaluation.
Despite the challenges in SPF testing accuracy, experts stress the importance of sunscreen application. They recommend using sunscreen as part of a comprehensive sun protection strategy that includes seeking shade, wearing protective clothing, and avoiding peak sun exposure hours. Efforts to enhance sunscreen testing protocols and increase consumer awareness are ongoing to ensure the effectiveness and reliability of sun protection products.
