The urea in cosmetics is not biologically obtained, it is manufactured commercially, which is quite easy, as it is a simple molecule,CO(NH2)2 . It is also used in fertilizer and animal rations. On the other hand, the estrogen in Premarin is derived from pregnant mare's urine. (Get it? PREgnant MARe urINe.)
[ 05-30-2003, 09:25 PM: Message edited by: Attalus ]
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