Castle Harlan and Branford Castle Partners, leading private equity firms acquires Sunless, a leading manufacturer and marketer of spray tanning equipment, spray tanning solution and related accessories from Riverside Company. Financial terms were not disclosed. "Sunless is an excellent opportunity to acquire the leader in a growing and recurring consumer market," said Eric Schwartz, Managing Director of Castle Harlan. "Demand for spray tanning is strong. It is amazing how quickly consumers who try spray tanning become regular adopters, and we expect this trend to continue in the coming years."