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.
November 12, 2011. The American Pregnancy Association states that once sperm is dry it is dead. Sperm cannot be brought back to life by being re-moistened. So if the sperm has dried it is not going to get anyone pregnant. Experts have differing estimates on how long sperm can live outside the man's body. Some report it can be up to five days if the sperm stays within a warm moist environment, such as a woman's cervix. But outside of the human body, sperm have a much shorter existence, from 20 minutes to an hour, depending on such factors as exposure to air and humidity.