Born and raised in Buffalo, New York, Sir John Barnett, popularly known as Sir John, is an internationally acclaimed celebrity makeup artist, creative executive, and beauty innovator. Best known as Beyoncé's longtime creative collaborator and makeup artist, he has built a career defined by artistic excellence, innovation, and an unmistakable approach to beauty. Through his beauty brand, Sir John Beauty, he continues to champion products and creative experiences that celebrate individuality and inclusivity.

After training under legendary makeup artist Pat McGrath, Sir John quickly established himself as one of the industry's most sought-after artists. His distinguished client portfolio includes Naomi Campbell, Serena Williams, Priyanka Chopra, Margot Robbie, Zendaya, Naomi Osaka, Mary J. Blige, Iman, Celine Dion, Viola Davis, Erykah Badu, Joan Smalls, Chrissy Teigen, and Kat Graham. He has also worked backstage at some of fashion's most prestigious runway shows, including Dolce & Gabbana and Prada.

Beyond his artistry, Sir John has become a respected leader in the global beauty industry. He made history as the first Black Creative Director for L'Oréal Paris USA and currently serves as Chief Creative Officer of CTZN Cosmetics, where he continues to shape product innovation and creative direction. In recognition of his influence and contributions to beauty, he was named InStyle's Makeup Artist of the Year in 2016.

Whether through editorial beauty, runway artistry, celebrity collaborations, or Sir John Beauty, Sir John continues to redefine modern beauty by blending fashion, creativity, and storytelling. His work inspires a new generation of artists while championing diverse expressions of beauty on the global stage.