| http://www.w3.org/ns/prov#value | - When the composition is a liquid, such as a lotion or aerosol, or a semi-liquid such as a gel or ointment, or a solid stick, then it is usually necessary to dissolve an effective quantity of the ester of pyroglutamic acid, or a mixture thereof, in ethanol or other non-aqueous cosmetically acceptable vehicles, and then to admix this solution, if desired, in a conventional manner with a suitable oin
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