Sir John, the man credited for many of musical artist Beyonce’s flawless makeup looks, was appointed Thursday as cosmetic company L’Oreal’s newest celebrity makeup artist. The New York-born Sir John, who’s in his early thirties, accompanied Queen Bey on her Mrs. Carter tour and last year’s On the Run performances with husband Jay-Z.

Sir John was thrust into his role as a professional makeup artist purely by accident. He told Vogue that he had “no knowledge of what mascara was” until a few years ago. He was attending a catalog shoot in Atlanta as an art student when one of the makeup artists canceled – and Sir John was asked to fill in.

“I pieced together what the model had in her bag—I used my fingers, no brushes,” he explained. Turned out he possessed a natural talent for color and application – not unlike deceased makeup artist Kevyn Aucoin or YouTube beauty guru Michelle Phan.

Sir John relocated to New York City more than a decade ago at age 20. He took a job dressing windows at Henri Bendel, which led to a career window doing visual merchandising at Gucci. The young makeup artist then met with British makeup artist Pat McGrath – and the rest was history. From there, Sir John landed a string of enviable gigs – jobs with designers like Tom Ford (where he met the iconic Beyonce) were carried out with McGrath and makeup artist and YouTube guru Charlotte Tilbury.

“We shot videos all over the world. It was such a great experience,” Sir John said of becoming an ambassador for L’Oreal. “I’ve come to love the brand through her eyes,” he added, referring to Beyonce’s favorite products, which include the Infallible lip color line, a long-lasting lip product that's smudge-proof and lasts for hours.

Some of Sir John’s favorites also include the company’s popular Voluminous original mascara and its new La Palette Nude eye shadows.