Comparison of two different in vivo SPF values
SUNCERT ToolThe Challenge
During development of a sunscreen product or for a quick verification of the efficacy of a new product or batch, an in vivo screening of the SPF is often used with a small number of volunteers and we do not have an objective tool to take a decision in terms of equivalence on UVB protection.
The Solution
From the results of in vivo SPF obtained on a reference product and a product to be compared, a statistical approach [1] helps you to determine if the two products have an equivalence at the UVB protection level. Of course, equivalent UVA protection and compliance with the regulations in force are also necessary.
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[1] M. Pissavini, O. Doucet and O. Brack, Interpretation of SPF in vivo Results: Analysis and Statistical Explanation, Cosm & Toil 126(3) 172-184 (March 2011).
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These documents, these tools, any answers or information provided herein by SUNCERT, does not constitute a legally binding obligation of SUNCERT. While the descriptions, designs, data and information contained herein are presented in good faith and believed to be accurate, it is provided for guidance only, No warranties of any kind, either express or implied, including warranties of merchantability or fitness for a particular purpose, are made regarding products described or designes, data or information set forth. Because many factors may affect the final value, we recommend that you perform a full inspection of the product to determine the suitability for your particular purpose prios to use.