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Consumers Say Hair Products Caused Hair Loss; DMDM Hydantoin Cited

Lawsuits against major hair-care brands claim DMDM hydantoin, a formaldehyde-releasing preservative, caused hair loss and scalp irritation in consumers.

Published Sep 24, 2026, 12:00 PM EDT | LehighValleyLive

If you’ve ever tried a new hair care product and wondered if the product was doing more harm than good, you’re not alone.