Her first book called Mary Kay on People Management was published in 1984 and the publisher Nightingale Conant produced an audio program written by Ash with the same title as the book.
At age 45, frustrated after too many of her male trainees were promoted above her, Ash launched her own company.
The book turned into a business plan for her ideal company, and in the summer of 1963, Mary Kay Ash and her new husband, George Hallenbeck, planned to start Mary Kay Cosmetics.
A successful salesperson in Dallas, she quit her job in 1963 because, she said, a man whom she had trained was promoted above her at twice the salary.
Compacts and makeup boxes sold by the Mary Kay were also pink, and Ash once owned a 19,000-square-foot pink mansion with a gigantic pink marble bathtub.
The 1960s were a decade of change for many women as they began entering the workforce in greater numbers.