Key makeup artist Peggy Nichols knows how to keep the cast of CBS’s hit series “The Big Bang Theory” beautiful AND healthy!

A longtime fan of Boiron products, Nichols “always keep[s] the homeopathic medicine Oscillococcinum in the makeup room on ‘The Big Bang Theory’ for whenever the cast starts feeling like they are getting sick. It works great!”

Nichols is also currently the key makeup artist for CBS’s “Two and a Half Men.” She previously worked on the set of ABC’s “The Practice.”

“The Big Bang Theory,” starring Jim Parsons, Johnny Galecki and Kaley Cuoco, airs Thursdays at 8 p.m. on CBS. An all-new episode will air this Thursday, January 6.