I've had a similar problem and through much trial-and-error finally found a moisturizing product that actually works.
It's Aveeno's Shower and Bath Oil (the blue one). Aveeno has a lot of similar-looking products, and the only one that worked was the "blue" Shower & Bath oil with natural colloidal oatmeal.
(Ingredients are Mineral Oil, Oat (Avena Sativa) Flour, Laureth-4, Quaternium-18 Hectorite, Benzyl Alcohol, Benzaldehyde, Silica.)
This will keep my foreskin lubricated all day, even when masturbating or having sex.
I think it currently runs about $9 for 10 oz, which is quite expensive for a "shower gel", but I finally found something that works.
Make sure you follow the directions on the bottle. They want you not to "towel off" after showering, but "patting dry" instead. It really makes a difference.
Hope this works for you..
P.s.: Here is a link for you so you for more information.
http://www.aveeno.com/detailAction.do?id=3660
Is it ok to use Johnson's baby lotion on the penis foreskin for dryness? Thanks.
The stickiness is more likely due to irritation than urine. Lubrication seems the best route. You might try 1% hydrocortisone (non-prescription) for a couple of day, and if it helps then use it every now and then. If it becomes uncontrollable, you should show it to a doctor.
Take care.
Dr. Rockoff