Madam C. J. Walker was born on a plantation in 1867.
Her rise to fortune began with a SCALP DISORDER. She created a potion containing SULFUR which seemed to cure her.
This led to her starting a manufacturing company, and she went on to become the world's most female entrepreneur of her time.
This is evident in the fact that her hair treatment product named Wonderful Hair Grower is made of the following ingredients: precipitated sulfur, copper sulfate, beeswax, petroleum, etc.
Madam C. J. Walker lived between 1867 to 1919.
Hence, in this case, the correct answer is SULFUR.
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