Australian men are turning to Botox to deal with their wrinkly scrotums.

The procedure - called “Scrotox” - is gaining in popularity, with gents willing to fork out about $1000 for a smoother sack.

“Scrotox is the use of Botox, or one of the three neurotoxins for muscle relaxation, injected into the scrotum,” Jayson Oates told news.com.au.

Dr Oates, principal surgeon and medical director of CALIBRE Clinic, a practice dedicated to medical male enhancement procedures, said men opted for the procedure for cosmetic and medicinal purposes.

“The most common reason we have guys asking for Scrotox is because their scrotum is tightly contracted, squeezing up on their testicles and it’s painful,” he said.

“The relaxation of the scrotum helps the testes to hang a bit lower and offers some relief.”

According to CALIBRE’s website, Scrotox injections aren’t made into the testicle but “just into the skin itself”.

“To actually get the testicles themselves to hang lower, it may be necessary to inject deeper to the cremaster muscle which is responsible for retracting the testicle itself up,” Dr Oates said.

“This may also be necessary for guys who find that a tight scrotum is painful. Usually we start with just the superficial injection to see if that is enough.”

Urological Society of Australia and New Zealand spokesman Peter Chin said there is a risk the Botox could travel throughout the body if not injected correctly.

“When you put it into a deeper structure, such as the cremaster muscle, no doctor can definitively say they won’t go through a vein, which puts this procedure at a higher risk,” he told news.com.au.

“But it can be a beneficial procedure for men who suffer from pain association with the retracting cremaster muscle.

“While it’s an unlikely scenario with localised Botox injections and the risks for cosmetic surgery are low, if you’re treating a muscle spasm and injecting it much deeper, you increase the risk for the toxin to travel.”