Seen a half-grown handlebar or two this week? Perhaps a fledgling Fu Manchu? Mustache season is here again. And it's for a good cause!

It's called Movember -- a mashup of "mustache" and "November," get it? Legend has it, the idea was born over beers in Melbourne, Australia, in 2003, as a group of guys discussed all the attention breast cancer awareness groups have managed to grab for their cause, especially in recent years. The world goes pink in support of women's health in October; why shouldn't men's health enjoy the same attention?

Related: Famous mustaches slideshow

Seven years later, Movember has become a global trend, spreading to the U.S., the UK, Canada, New Zealand, Ireland, Spain, the Netherlands, Finland and South Africa. Last year, 255,755 people participated in Movember, raising $42 million toward men's health issues, including prostate cancer research, according to the Movember Foundation's website.

But for you fellows whose facial hair won't cooperate, there are other ways to show support. You can donate directly to the Prostate Cancer Foundation and Livestrong, Lance Armstrong's charity for people affected by cancer, on the group's website. Other options for the facial hair-free are cataloged on a recent blog post from BellaSugar, which points out the proliferation of mustachio'd accessories, including handlebar headbands, rings and necklaces.

Do you participate in Movember? (Or, are you participating without realizing you were doing any such thing?)

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