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Fermodyl by Roux

Fermodyl by RouxFermodyl by Roux Roux Fermodyl Leave in Hair Treaments. Roux Fermodyl Leave-In Hair Treatment customized leave-in hair treatment is a series of 7 customized formulas containing molecules that interact and bond with the hair, treating it from the inside out. Improves quality and shine. Hair is more receptive to styling and chemical processing.