Meet the 30 Under 30 Coolest Entrepreneurs

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Hayley Barna and Katia Beauchamp, Birchbox

Katia Beauchamp wished for an in-the-know friend in the beauty business. Instead, she founded Birchbox with her Harvard Business School friend, Hayley Barna. For $10 a month, subscribers receive a box of four to five curated samples from major cosmetic companies. They can then buy full-sized versions of the items they like from Birchbox. The partners are expecting revenues of $7 million this year. Read more.