Meet South Korea's new millennial beauty billionaire, who counts Kylie Jenner as a fan of his skincare gadgets

Kylie Jenner promoted APR's Booster Pro device.

Michael Simon/WireImage

• South Korea's beauty industry has minted a new billionaire.
• APR Corp.'s Kim Byung-Hoon, 36, profited from the rising popularity of his Medicube brand.
• The beauty tech brand has been touted by celebrities like Kylie Jenner and Hailey Bieber.

South Korean beauty is having its moment, and one millennial is raking in big bucks from it.

Kim Byung-Hoon, the 36-year-old chief executive of Seoul-based cosmetics company APR Corp....