On any given day, more than 800 million women between 15 and 49 have their period. However, globally 1.25 billion women do not have access to a toilet during menstruation, according to the charity WaterAid.

For refugee women, fleeing their homes for safety, the challenges of a period can be even greater.

"There's no dignity in having your period when you're a refugee," Terri Harris, of the Muslim women-led development charity Global One told the Thomson Reuters Foundation.

A study conducted by Global One in displacement and refugee camps in Syria and Lebanon found that almost 60 percent of female refugees did not have access to underwear, and many more had no sanitary products for when they had their period.

Read more on Thomson Reuters Foundation News, 8th March 2017