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 with vitiligo," Vincent told Newsweek . "So, seeing new spots with my natural color is surreal, something that’s still foreign to me."

The disorder affects about 1 percent of Americans —up to 2.8 million people—and first appeared for Vincent at age 5, beginning with small patches on h

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