| http://www.w3.org/ns/prov#value | - Patent US4021578 - Cosmetic and skin conditioning composition - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsGrapefruit pulp is reacted with an alcohol or ketone, preferably a polyhydric alcohol such as propylene glycol or glycerin, in the presence of a free radical initiator such as ultraviolet light to produce a stable reaction product
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