1. Comparison of ultraviolet A light protection standards in the United States and European Union through in vitro measurements of commercially available sunscreens;Wang;J Am Acad Dermatol,2017
2. 76 Federal Register27591 (2012) (codified at 21 CFR §201.327).
3. International Organization for Standardization website. ISO 24443:2012. Determination of sunscreen UVA photoprotection in vitro. Available at: https://www.iso.org/standard/46522.html. Accessed May 22, 2017.
4. The Commission of the European Communities. Commission Recommendation of 22 September 2006 on the efficacy of sunscreen products and the claims related thereto. Official Journal of the European Union, L265/39, 26.9.2006.
5. International Organization for Standardization website. ISO 24442:2011. In vivo determination of sunscreen UVA protection. Available at: https://www.iso.org/standard/46521.html. Accessed May 22, 2017.