Jon Hamm is one seriously manly man; no wonder he's the star of AMC's hit "Mad Men." But according to the series' makeup artist, he might be just a little more manly than average — since when the show's filming, she and her team have to continuously check on his facial hair.

"We shoot such long hours," five-time Emmy nominee Lana Horochowski told OK! Magazine. "For Jon, we shave (him) sometimes two, three times a day."

Meanwhile, Hamm's on-show wife Megan (Jessica Paré) needs a little hair enhancement ... on her eyes. "Megan has more of a nude, chalky lip, and then she has the crazy 'Twiggy' painted-on eyelashes. She'll wear like three sets of lashes," Horochowski said. "We go for it."

But when it comes to makeup, Horochowski insists they keep it minimal, for the men, at least. And in the case of some of the other actors, their facial hair has to be faked entirely. "It's more skin maintenance," she said. "We throw a little tinted moisturizer on them."