Limitations of Modern Sunscreens: Implications for UVA Protection and Skin Cancer Prevention
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Keywords
sunscreen, photoprotection, UVA, Ultraviolet radiation, non-melanoma skin cancer, NMSC, UVB
Abstract
Sunscreens have evolved from primarily blocking UVB radiation to theoretically broad-spectrum formulas that protect against both UVA and UVB. Despite these advances, UVA-associated squamous cell carcinoma (SCC) and melanoma have risen disproportionately compared to UVB-associated basal cell carcinoma (BCC), suggesting inadequate UVA protection. Modern broad-spectrum products continue to quantify protection using sun protection factor (SPF), which reflects UVB coverage. This focus on UVB may help explain the observed shift in cancer ratios. High SPF sunscreens have been very successful in preventing UVB induced burns, but in turn, this may encourage patients to spend much more time outdoors thus leading to a significant increase in UVA exposure. Continued research, improved UVA coverage, and standardized methods for measuring UVA protection are essential for optimizing skin cancer prevention.
References
2. Marrero-Perez A, Vanaria RJ, Chaudry A, Berman B, Nestor MS. Ratio of nonmelanoma skin cancer histologic subtypes in a South Florida dermatology practice: High incidence of squamous cell carcinoma subtypes. J of Skin. 2025;9(2):s571. doi:10.25251/skin.10.supp.571
3. Raymond-Lezman JR, Riskin SI. Sunscreen Safety and Efficacy for the Prevention of Cutaneous Neoplasm. Cureus. 2024;16(3):e56369. Published 2024 Mar 18. doi:10.7759/cureus.56369
4. Zhou L, Zhong Y, Han L, Xie Y, Wan M. Global, regional, and national trends in the burden of melanoma and non-melanoma skin cancer: insights from the global burden of disease study 1990-2021. Sci Rep. 2025;15(1):5996. Published 2025 Feb 18. doi:10.1038/s41598-025-90485-3
5. Stern RS; PUVA Follow-Up Study. The risk of squamous cell and basal cell cancer associated with psoralen and ultraviolet A therapy: a 30-year prospective study. J Am Acad Dermatol. 2012;66(4):553-562. doi:10.1016/j.jaad.2011.04.004
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