If you think you’re seeing more mustaches over men’s upper lips in November, chances are your eyes are not deceiving you. Along with Thanksgiving and the start of the holiday season, is Movember®, a public health-focused effort to raise awareness of, and support research into, men’s health issues such as prostate cancer, testicular cancer, and suicide. Men who participate in Movember typically begin growing mustaches on November 1st and keep them throughout the month.

Movember began in 2003, when two men in Australia, Travis Garone and Luke Slattery, met for a beer. The popularity of mustaches had waned, but Garone and Slattery joked about restoring the stache to its popular status. At the time, a friend’s mother was fundraising for breast cancer, and the friends decided to combine their efforts to bring back the mustache with efforts to raise awareness about men’s health and prostate cancer. They found 30 men willing to take up the challenge to grow a mustache. Those who accepted the challenge agreed to follow the rules, which included paying $10 to grow a mustache.

Movember generated significant enthusiasm, officially leading to a decision to support a worthy men’s health cause each year. After some research, they chose prostate cancer. The Prostate Cancer Foundation of Australia agreed to accept any funds generated by the 2004 campaign. By that time, 450 men, including some in Spain and the United Kingdom, had decided to take part, ultimately raising more than $32,000.

Nearly 20 years later, the mustachioed movement to raise awareness about various men’s health issues is still going strong in 20 countries, including the United States, and has funded more than 1,250 men’s health projects. Individuals interested in learning more about Movember can visit https://us.movember.com.