Article: Liberally coat the area of sap with toothpaste and scrub it lightly between your hands. The abrasives in the toothpaste should have no problem removing the sap after 1-2 minutes. Wash away the toothpaste with warm water and soap to finish the job. These two liquids may dry your hands out, but they are incredibly effective. Pour some on a rag or sponge and use it to lightly scrub away the sap. Give it a little time to set in before trying to scrape it off your skin. and be sure to wash you hands with soap and water when you are done.  Alcoholic wipes, used in first-aid kits or as a disinfectant are a great portable solution. Squirt some of the degreaser into your hands and use it to "wash" your hands as if it was liquid soap. Spend some time scrubbing the sap, which should come right off. Be sure to wash your hands with soap and warm water immediately after finishing. While the sap is still fresh and wet, rub a little dirt into it. Wait until it dries, when the dirt will make it fragment and keep it from sticking too hard to your skin, You can then use some simple soap and water to remove the sap from your skin.

What is a summary?
Use toothpaste. Try rubbing alcohol or nail polish remover for big patches. Try a little WD40. Rub some loose dirt in the sap if you are in the wilderness.