Craig A. Bonda - Winfield IL Urvil B. Shah - Mokena IL Robert J. Mcmillin - Oak Lawn IL Magda M. Roth - Homewood IL
Assignee:
The C. P. Hall Company - Chicago IL
International Classification:
A61K 742
US Classification:
424 59, 424 60, 424400, 424401
Abstract:
A method of preparing a sunscreen including a solvent system and a filter system, the method including the step of controlling the polarity of the solvent system to control the rate of photodecay of the filter system, as well as sunscreen compositions and compounds for producing sunscreen compositions, are disclosed.
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