MAC was hosting a pop-up shop in the Barclays Center to celebrate the release of RiRi Woo, a lipstick that is part of MAC's Rihanna capsule collection. Rihanna was having a concert in the center that evening.
Starkeema Greenidge, 28, says a makeup artist applied the lipstick to her mouth after using it on other patrons. The practice is common among makeup counters, but the tubes are sanitized between use or applied with a clean lip brush.
Two days later, Greenidge developed a cold sore her doctor diagnosed as herpes.
"I wasn't able to work for two weeks," Greenidge said.
Greenidge's lawsuit says she asked the MAC makeup artist whether the tube of RiRi Woo was clean, and was hastily told that it was. Greenidge said the woman just said "Yeah, yeah, yeah," and did not give her a confident answer.
"This is going to happen over and over again if nothing is done," Greenidge told the New York Daily News.
MAC is reviewing the claim and has not yet commented on the lawsuit.