Leave space at the tip of the condom for semen. After ejaculation, the man should hold the condom secure while withdrawing his penis from the vagina to help prevent the condom from coming off or spilling. Never use the same condom twice. Once out of the vagina the condom can be removed and disposed of. The penis should be washed to prevent any semen from inadvertently making its way back into the vagina.
Oil based lubricants such as petroleum jelly can damage the condom.
The lubricant can be placed on the outside of the condom prior to intercourse. Condoms should be used to prevent HIV and other STDs by women when performing oral sex on men. Never store condoms in your wallet or glove compartment. Heat can damage condoms. Carrying a condom in a hip-style wallet for long periods shortens the shelf life.