How Americans' skin became a K-beauty craze

A Korean beauty treatment is taking the skin care world by storm. It’s made from the skin of dead American donors.

These products, which promise to reduce signs of aging, are projected to generate $75 million in sales this year in South Korea.

Business Insider traced the supply chain to understand how donor tissue from, say, San Antonio can end up in products for sale at a clinic in Seoul — and how much money is being made along the way.