Almost every day for the last seven years — "Out of 2500 pics I should have, I'm missing about 50," he told TIME — Cornellier sat in front of his computer to take a selfie, capturing experimental facial hair and all.
Over the years, Cornellier has posted updates on his YouTube. But the recent video tracking his development from 12 to 19 has been a particular hit, accumulating 1.2 million views in just over 2 weeks.
And Cornellier isn't planning on stopping any time soon.
"I still take a picture every single day," he said. "This will go on forever. I never plan on stopping."