How Invisalign made billions reinventing adult braces for millennials

There is nothing necessarily new about Invisalign. The 25-year-old company was started by Stanford alum Zia Chishti and three of his classmates out of a garage in Menlo Park in the late 90s. Now, Invisalign makes over 750,000 custom retainers every day. CEO Joe Hogan says the company is the largest 3D printing business in the world. It took 10 years for Invisalign to reach 1 million customers. But something happened when we locked down, our mouths and wallets opened up. It expects to add some 2.5 million customers this year in the US alone.