Mark Cuban typically only invests in companies if he can see himself — or his NBA team, the Dallas Mavericks — using their products.
On Friday's episode of ABC's "Shark Tank," he made an exception on behalf of his two daughters and his wife, making a $400,000 investment deal with San Francisco-based makeup company Youthforia.
Robert Herjavec said he didn't understand what made the product unique, and Lori Greiner said she didn't use oil-based makeup.
That's when Cuban came back in, saying he'd offer $400,000 for 10% without a royalty deal, because his daughters and wife would "understand" the product.
O'Leary, growing frustrated, said he'd give $400,000 for 7.5%, but wanted a 75-cent royalty until he made $1 million.