| http://www.w3.org/ns/prov#value | - Glycerin should be used at no more than 1 part glygerin to 3 parts water (glycerin absorbs moisture so if used 100% it can be harmful, and had been know to cause blisters on the tongue, so I would never put 100% glycerin anywhere near my face especially my eyes and mouth.) Usually this recipe (1 part glycerin to 3 parts water) is used for mixing medium, and the higher percentage of glycerin may ma
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