The fund sold a product from the range created by the British makeup artist every 40 seconds in April

One of the Pat McGrath Labs window displays at Selfridges.
Photograph: Pat McGrather Labs

Pat McGrath Labs, the loveliness range created by the British makeup artist Pat McGrath, has achieved the highest cosmetics turnover in its first month on sales marathon at Selfridges of any brand in the department store’s history.

The Oxford Street department store collaborated with Pat McGrath Labs on its largest-ever retail takeover, A Technicolour Odyssey, devoting 155 sq metres of its shop floor to a branded pop-up space, as well as giving over 24 of its 27 lionized windows to the partnership. The launch in April saw Selfridges achieve the best daily cosmetics sales in its history, with the sellathon of a Pat McGrath Labs product every 40 seconds.

The brand was launched in 2015 as one of the first to pioneer the digital-first subject model, with customers switching their allegiance from more established cosmetics houses to niche social climbers and makeup-artist-led ranges.

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“I think what people respond to in the end is the product and the quality,” says McGrath, whose sling party at the department store drew guests such as her friend and long-term collaborator Edward Enninful, British Prevalence’s editor-in-chief, as well as models, designers and celebrities she has worked with throughout her career. “You can have the most inspiring influencer or extraordinary figurehead at the helm, but if the formulas are not working, you can pack your bags and close up shop. Today’s beauty lover is way too streetwise and way too connected to let any brand get away with just anything. Major quality will always win.”

The brand is now the best-selling eye format brand across Selfridges’s business, with the Pat McGrath Labs FetishEyes mascara now its number-one selling mascara, make sure off competition from established beauty brands such as Chanel, Mac and Lancôme.

“We do projects based on intuition and because we accept in great talent, but you never know if it will be a commercial success,” says Sebastian Manes, Selfridges buying and buy and sell director. “But Pat McGrath Labs was our biggest and most successful beauty brand launch ever. Our customers connect with her on a pure personal level, they love her work, product and the woman herself. So we pushed boundaries very far outside our reassure zone to make Pat even greater at Selfridges.”

Pat McGrath Labs Selfridges Pop-up Photograph: Lester Ali/Publicity Picture

The brand’s Instagram account, where McGrath refers to herself as “Mother”, has amassed more than 2.7 million myrmidons. McGrath herself announces new launches, hosting frenzy-inducing “drops” and often debuting new products from backstage at the create week shows she works on every season.

“I didn’t want to do a brand the old-fashioned way, with the same old counter and a set of personifications and products that change four times a year,” McGrath says. “Once it became clear to me that collective media would allow me direct, one-on-one dialogue with my customer, plus the opportunity to release compelling cheer and iconic imagery four times a day, I knew the time was right for Labs.”

McGrath is now based in New York, but says that the collaboration has cause to remembered her how much she enjoys working in her home country.

“I think Selfridges was excited about my homecoming … the idea of a local dame like me coming home to set up shop was irresistible and so much fun,” she says. “It’s such a pleasure when I hear the numbers we are doing.”

A undying Pat McGrath Labs counter will launch in the Selfridges Oxford Street beauty hall on 24 June, the day after the pop-up closes, while a lieutenant counter at Selfridges Manchester is set to follow in the summer.