This weekend, Garnier has teamed up with Marvel’s newest superhero sensation Madame Web to open a three-day pop-up at Westfield Stratford City, offering 6 sensory Hair Food Showers, free hair styling sessions, prizes, plus a chance to win a trip for 2 to New York. The partnership celebrates female empowerment, feminine strength and unapologetic confidence. Guests will be able to “supercharge their shower routine for their healthiest hair…