With a palette of chic gray and sunny yellow and mirrors made for selfies, Drybar is a brand that was built for Instagram — a prescient move for the blow-dry-only hair salon, the birth of which predated the existence of Instagram by eight months in 2010. "Our social media presence was more Twitter based, and there wasn’t the opportunity to post pictures like they do now," founder Alli Webb says in a phone interview from California.