Keeping the affected area clean and dry can usually help reduce skin redness. If an infection is the cause of your skin redness, your doctor may prescribe antibiotics to reduce the infectionâs symptoms. 1  1.
1 Exposed to air, on a cold surface or clothing, for example, sperm usually die within minutes. 2  In a closed and clean container at body temperature, sperm can survive for 4-6 hours or even more.  Sperm can be frozen at extremely low temperatures (but not in the refrigerator) and survive for years.
The sperm dies long before the semen dries up unless it's in moist warm place. If you should squirt it on the floor the sperm would die within a couple minutes and if you shoot it into a towel it might live for 3 minutes tops.