To that end, Harry’s owns its own blade manufacturing facility in Germany—one reason why the company has so many employees (and why Katz-Mayfield has picked up some German language skills).

Raider, who is also a Warby Parker co-founder, had spent seven years building Harry’s with co-founder and co-CEO Andy Katz-Mayfield. Together, they turned it into a direct-to-consumer disruptor ...