P6.1 / Tristan Walker, Choice 1 of 8
Tristan Walker, chief executive of Walker & Co., a maker of skin care and beauty products for the African-American market, in New York, Feb. 3, 2014. Walker, who helped build Foursquare and was a consultant for the venture capital firm Andreesen Horowitz, says entrepreneurs should not hesitate to start out small. "There is opportunity in the niche. Some of the most successful businesses started there and broadened out." (Chester Higgins Jr./The New York Times) -- PHOTO MOVED IN ADVANCE AND NOT FOR USE - ONLINE OR IN PRINT - BEFORE FEB. 9, 2014.