Diarrha N'Diaye-Mbaye, one of the first among the small number of Black women to raise more than $1 million in venture capital, hinted that one of the problems was tension between her and investors' expectations of a consumer retail business.

I spent months testing dozens of heat protectants for hair. Whether you’re blow-drying, curling, or straightening, these are the best formulas I've found.

Curious about the best thermal brush? Here’s what they can and can’t do for your hair, and which ones are worth buying.