Occupational studies stretching back decades have found an increased risk of bladder cancer among hairdressers.

Jacob Schwartz is a hair colorist and the hair color trend ambassador for Schwarzkopf. He's worked with a ton of big names, including Bella Hadid, Troye Sivan, and Sydney Sweeney.

NBC News’ Kate Snow talks with hairdresser Hector Corvera who was diagnosed with bladder cancer in 2023. He is the plaintiff ...