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During the past year certain brands of soap have been flamboyantly exploited for their vitamin D content; one for the "filtered sunshine" in its lather. The latter product was introduced to the public with double page spreads in national magazines under the caption "The Dawn of a Great Beauty Discovery." In subsequent advertisements a picture of a nude but decorously posed model entering what appears to be a private outdoor pool on a sunshiny day calls attention to such claims as:
"Your skin readily soaks up... [the]... 'Filtered Sunshine' element—the Vitamin D ingredient—from... rich creamy lather as you wash and bathe. This has positive proof in the records of important scientific tests."
There is evidence that irradiated ergosterol may be absorbed through the skin of rats. This evidence has been an excuse for adding vitamins to various cosmetic preparations. H. Stanley Redgrove, writing in the Pharmaceutical Journal, London, April 17,
NO SUNSHINE IN SOAP. JAMA. 1937;109(7):509–510. doi:10.1001/jama.1937.02780330037014
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