Alyssa Milano in Universal City, Calif, Sept. 8, 2015.
Noel Vasquez—Getty Images
December 15, 2015 12:55 PM EST

Hundreds of women are coming forward claiming a popular celebrity-endorsed hair care product caused their hair to fall out and severely damaged their scalps.

More than 200 people in 40 different states have filed a class-action lawsuit against Wen Hair Care and infomercial giant Guthy-Renker, alleging that using the company’s cleansing conditioner resulted in baldness, rashes, scalp irritation, hair breakage and hair discoloration.

The products, which are designed, manufactured and sold by Chaz Dean, the self-purported hair stylist to Hollywood’s “Who’s Who,” and Guthy-Renker, the direct marketers behind the Proactiv acne treatment and other popular beauty products, are described as being a sulfate-free alternative to shampoo.

Read the rest of the story from our partners at NBC News.

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