Final answer:
Madam C.J. Walker is considered a pioneer in the modern African American hair care and cosmetics industry.
Step-by-step explanation:
The pioneer in the modern African American hair care and cosmetics industry is Madam C.J. Walker. She was an entrepreneur, philanthropist, and social activist who developed and marketed a line of cosmetics and hair care products for black women in the early 20th century. Madam Walker is often recognized for creating a business empire against all odds during a time when African Americans were fighting for equal rights and attempting to define their identity in a society dominated by racial discrimination and oppressive standards of beauty.