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Pinch a fold of skin and fat

Meet the Experts Sarah Sung, MD, a board-certified dermatologist of The Perq, based in Seattle Purvisha Patel, MD, a board-certified dermatologist and founder of Visha Skincare, based in Memphis, Tennessee Nazanin Saedi, MD, a board-certified dermatologist at Plymouth Meeting Dermatology, based in East Norriton, PA Brendan Camp, MD, a New York City-based board-certified dermatologist Rachel Nazarian, MD, a board-certified dermatologist at Schweiger Dermatology Group in New York City Mina Amin, MD, a board-certified dermatologist based in Los Angeles How we test and review products When Allure tests a product, our editors look at it from every angle in an effort to best serve you

Yes, vitamin B12 deficiency can affect red blood cell production and reduce oxygen supply to the scalp, potentially leading to gradual hair thinning

It is designed to support microbiome balance, gastrointestinal barrier integrity, mucosal surface health, immune communication, and tissue resilience