A decade ago, Michael Dubin founded Dollar Shave Club as a no-frills, $1-a-month razor startup. Five years later, he sold the company for $1 billion to consumer-products giant Unilever. Earlier this year, Dubin stepped down as CEO. Hear the man behind the crazy viral videos and hilarious offbeat advertising explain what it really takes to start, scale, and eventually sell a billion-dollar brand that people love. Find out what’s next for this razor-sharp founder.