SPF Testing

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Sandblasting to Improve the Reproducibility of In vitro Sunscreen Evaluation

Mar 20, 2014Sébastien Miksa, Dominique Lutz and Céline Guy, HelioScreen Labs, Creil, France

SPF test results from substrates treated using a traditional sandblasting technique are compared with those from substrates treated using a new process. Based on the topographic control of 10 batches and 34 sunscreen evaluations, the authors concluded the new process had better topographic reproducibility, consequently improving the SPF repeatability and reproducibility in vitro.