3. Hair Conditioner Wouldn’t Exist Without Madame C.J. Walker
Madam C.J. Walker was an American entrepreneur, philanthropist and political/social activist. She is the first female self-made American millionaire (source: Guinness Book of World Records). Madam C.J. Walker made her fortune by developing and marketing a line of cosmetics and hair products for black women. She did this through her company Madam C.J. Walker Manufacturing Company.