WATCH: Woman’s warning about hand sanitizer’s invisible flame

A woman’s Facebook post has gained a lot traction after she shocked viewers by showing how flammable hand sanitizer really is.

In the video, the woman puts a few squirts of hand sanitizer on a plate.

She then holds a lighter up to the liquid and demonstrates how the liquid won’t catch on fire.

The shock comes when she then takes a napkin and holds it above the sanitizer puddle: the paper napkin bursts into flame.

She douses the napkin in water and lights the napkin a second and third time, to demonstrate that the ‘invisible flame’ isn’t dying down.

"You have to be careful," she points out "[if you have hand sanitizer on and are] around open fire,  have a gas stove, barbecuing."

Even smokers, they point out, may need to be cautious with the alcohol-product on their hands.

A real ‘wow’ moment occurs toward the end of the video when the woman and her family shut off the lights of their dining room to reveal a blue flame dancing on the plate which wasn’t able to be seen when the lights were on.

Though it’s not a news flash that alcohol, which most hand sanitizers are 70% made up of, burns, the shocking revelation has caused many Facebook users to repost the woman’s warning.

Mobile users see video here.