They're one of the oldest and simplest measures of precaution. Latex condoms also provide protection against AIDS and other sexually-transmitted diseases, which is reason enough for most people today. Although putting on a condom may seem pretty obvious, you should put it on only after the penis is hard, and before it gets near the female genital area. This helps prevent a too-tight fit and leakage when you come. Never use Vaseline or an oil-based lubricant with a latex condom.
Oils can make the rubber stretch and break.
After ejaculation, grasp the condom at the base of your penis and pull out from the female. For more protection, use a contraceptive foam along with a condom for nearly 100-percent effectiveness. Remember, though, that a new condom must be used with each act of intercourse. Couples can overcome the interruption by making the use of a condom part of the sex act itself, and guys can overcome most of the desensitizing effects by using pre-lubricated condoms and by carefully squeezing out any air when putting on the condom. It's called thinking.