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The Ciba® Sunscreen Simulator is a tool enabling the estimation of the Sun Protection Factor (SPF) as well as various common UV-A parameters. This tool helps the formulator planning the composition of active ingredients in a sunscreen formulation, but it does not replace the actual formulation work. The following parameters can be determined:
The Ciba® Sunscreen Simulator is based on the extinction spectrum of the individual UV absorbers and a model of the sunscreen film. This model that takes into account inhomogeneities of the film which exist on the skin. Furthermore the photoinstability of certain UV filter combinations as well as the synergistic effect arising from having UV filters in the oil and in the water phase, are also considered. The results of any calculated combination of UV Filters is presented as extinction and transmission of UV radiation from 290 to 400nm. Background Literature Disclaimer |  |
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