A California mom’s viral video documenting the dramatic return of pigment to her legs has stunned millions online—and it is all thanks to a clinical trial she joined earlier this year. Reshma Vincent, 34, a stay-at-home mom and small business owner, from the Bay Area, told Newsweek she has lived since childhood with vitiligo —a skin condition in which pigment-producing cells are lost, leading to well-defined white patches on the skin. "I feel excited and nervous because I’ve only known myself