ABC 7: Samuel L. Jackson talks de-aging
“They do it in post because when I’m shooting, I did have a wig on and I had dots on my face. There’s a process called LOLA, I’m not sure what they do, but I do know that they referenced some films that I did from that time. So when I look at it I see Danny Roman’s face from ‘The Negotiator,'” he said.
https://abc7.com/entertainment/samuel-l-jackson-talks-de-aging-in-captain-marvel/5170458/