British researchers are working on a project that could put a smile on the faces of many women.
The reason: a new contraceptive pill for men.
Scientists in London say they have found a hormone-free pill that stops the release of sperm.
Men could take a single dose a few hours before having sex and still have the same sensation, but the sperm would stay put.
That would make it much more user friendly than other methods already on the market.
"One of the problems with the hormonal pill, which is quite good, is that men have to inject themselves or have implants or patches and that is what men don't like," explains Dr. Nnaemeka Amobi at King’s College.
"It's not stopping sperm production, it's not a hormonal method, it's just simply stopping the muscle, which takes the sperm along," says Dr. Christopher Smith at King’s College.
Researchers believe the pill could be on the market within the next five years.