Hard water effects on skin and hair

Showerhead filters and LED face masks come with a lot of beauty claims...but do they deliver? Dr. Sanjay Gupta tackles two popular hair and skin trends, with insight from dermatologist Dr. Marisa Garshick, breaking down what the science says and whether they’re worth trying at home. 

Producer: Kyra Dahring  

Medical Writer: Andrea Kane  

Showrunner: Amanda Sealy  

Senior Producer: Dan Bloom  

Technical Director: Dan Dzula 

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