Girlfriends and wives across Northland have started grinning and bearing it as men this month enthusiastically embrace a hairy upper lip for a good cause.
The idea behind Movember is that men grow a moustache - or mo - for the month previously known as November.
It is all in the name of raising money and awareness for men's health issues.
A group of more than 10 workers from the Marsden Point oil refinery have got on board with the aim of raising more than $2500 for the Movember Foundation.
Movember veteran and refinery medical adviser Jim McLeod said some of the mos were already quite impressive.