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Caught Undercover: The Biggest Scams Exposed: Undercover Toxic Beauty Salons

Originally aired on 11/30/2017

Dr. Oz reveals the only mask that can protect against formaldehyde fumes. Then, core expert Tia Brown shares what you can do to reduce your exposure to the harmful chemical.

Guests: Tia Brown , Curly Nikki , Jeff Rossen , Bill Stanton