Yes, urea aka PEE is a common ingredient in skin products. Might as well use your own! I was reading a long thread at MedHelp about aging arms. Many women were very upset about the loose crepey skin on their arms. At age 63 with topical urine and other natural approaches like dry brushing, I still look good in tank tops! Alot of these women are desperate and yet I know this suggestion would never fly!
And yes, it's good for animals too. Wish the vets would catch on to that!