In 1990, Henderson joined the New York-based firm of Walter Dorwin Teague and Associates.

Since 2019, he has been a judge and presenter[1] on the television show America By Design Innovation series which airs on CBS.

The award-winning face shield[3] he designed in 2020 allows full view of a person’s face and was worn by Michelle Obama, Brad Pitt, Reese Witherspoon, Martin Sheen, Sandra Bullock, Adrien Brody, and Jennifer Aniston.

[1] Another of Henderson’s popular designs,[4] the Moby Spout Cover, has become so ubiquitous in American households with new babies that the product was parodied by Pixar in the Toy Story era short film, Partysaurus Rex.

He cites Frank Frazetta, Salvador Dali, Norman Rockwell, Edward Hopper and Walt Disney as influences.