Madison Reed: Amy Errett

Amy Errett had a successful career in finance and venture capital before taking a leap into an entirely new business: hair color. When her wife complained about the indignities of coloring her hair at home, Amy realized the sector was ripe for a makeover. At age 56, she dove into the minutiae of dyes and developers, launching her own formula in 2013, and naming it after her daughter. Madison Reed’s early successes were marred by a management meltdown, when Amy had to break with three of her co-founders—an experience she describes as one of the most difficult of her life...