Grow a pair. Seriously. I tried UT about five years ago and kept jars of urine to age... and didn't dare touch them. My loss!
Urine aged this way is a surprise. It really is. It's soothing and refreshing on the skin. The smell isn't bad once you spread it thin and the ammonia quickly evaporates. You can rinse it off if desired after some minutes.
If you sleep alone at night, you can put it on your face and neck before sleeping and the smell will be gone completely by morning.
If it gets on your hair, the smell lingers there. So avoid.
Stored in glass, the smell is better than if stored in plastic. Also, your diet matters. The more vegetarian the better for taste and smell.
Rule of thumb: fresh urine on open wounds and change the dressings often, aged urine on skin for the massage, or on wounds after closing... and I read somewhere that it is used for severe burns. It's extremely alkaline, so makes sense it would be good for burns.