WATCH: Rapplers try MAC's 'pizza cutter' eyeliner

ROLLER WHEEL LINER. Mac's Roller Wheel Liquid Liner has an unconventional shape. Rappler screengrab

MANILA, Philippines – MAC's Rollerwheel Liquid Liner has been making the rounds on social media because of its unconventional shape. Instead of the usual felt or brush tip, this eyeliner has a wheel, earning it the nickname "pizza cutter" in the beauty community.

PIZZA CUTTER. The MAC Rollerwheel liquid liner has a rolling disk instead of the usual felt or brush tip. Photo by Martin San Diego/Rappler

On its website, MAC says the spinning disk is like "training wheels" for liquid lining, making it easier to get a straight line every time – but does it really do what it says?

We put the "pizza cutter" liner to the test, asking 4 ladies on different liquid liner skill levels to try out the innovative new product.

Watch the video above and let us know in the comments below if you'd like to try the rollerwheel liquid liner yourself! – Rappler.com