Birchbox is a New York City-based online monthly subscription service that sends its subscribers a box of four to five selected samples of makeup, or other beauty related products. These products include skincare items, perfumes, organic based products, and various other cosmetics. The company was founded in 2010 by Harvard Business School graduates Katia Beauchamp and Hayley Barna. Birchbox has more than 1 million subscribers and operates in six countries. In 2018, Birchbox was acquired by one of its investors, Viking Global Investors, in a deal that valued the company at $500 million.