I read that the late Prime Minister of India who was practicing UT for several years and died at 100+ years old had no wrinkes and his skin was as soft as a baby, but he was massaging with urine for 1 hour each day.
Old urine would be even better but the smell and mostly the lack of time stopped me from using it. I did experiments with it when I started the therapy and it gave excellent results. The urea when aging is transformed into ammonia which is anexcellent cleanser(ammonia + oil = soap). I used to let it age under the sun on the patio (I live neat the forest) and let it evaporate. After a few days (4-7 days)you have a concentrate that is very silky. You can massage into the skin - put a little on your fingers and massage until dry etc... I should go back to doing it occasionnaly, but you need time. The other method is so easy and practical.