It’s hard to believe that Sunday will mark the beginning of the end of Mad Men—and that our obsession with Betty, Joan, and Peggy (not to mention old what’s his name) has spanned SEVEN years. In honor of the season premiere, I spoke to makeup artist Lana Horochowski, who revealed some surprising beauty scoops. Starting with the iconic Joan:

Joan’s go-to lipstick isn’t red—but everyone seems to think it is. “More than anything, I get asked about Joan’s red lipstick. But the thing is, she almost never wears red! She normally wears a pale pink, like Laura Mercier Baby Lips or M.A.C. Fanfare. Christina Hendricks’s lips are just naturally vibrant.”

Peggy’s hair and makeup may not be dynamic, but they’re strategic. “It’s always been established that Peggy was thrown into a man’s world. She’s just trying to keep up. She always wears the same lipstick. And we do her liner a little jagged, a little off. We let her get shinier and deteriorate throughout the day. It’s true to her character.”

Megan’s transformation was sudden—to everyone. “At first, we didn’t really know what was going to happen with Megan because she was just written as a secretary. We had her on the basic secretary makeup template. Then all of a sudden, she was Don’s wife and a French movie star! So she definitely changed from season four to season five.”

Betty and Joan are more similar than you think. “Betty and Joan are in a different age group than Megan Draper. They’ve adapted a look that’s more ’50s. I think when people look a certain way at a point in their life, it sticks.”

Each look is historically accurate from head to toe. “I have to research every single thing we do. Even down to nails and nail shape. As we’ve gotten later into the ’60s, it’s definitely gotten easier. I look mostly at makeup ads for inspiration and research, because they can let you know when products became available. As long as it was being sold, someone on the show can wear it.”

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