The season four premiere of Mad Men is almost upon us, so what better time to reflect back on episodes past and the salient lessons gleaned from our favorite quietly ruthless New Yorkers? Joan, Peggy, and Betty may not be the most psychologically stable bunch, but they certainly do know their respective ways around a vanity table. From lipstick advice to wielding the ultimate power bouffant, check out these 10 all-important precepts.
10 Key Beauty Lessons From Mad Men
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