Because the ingredients in Listerine (thymol, eucalyptol, menthol, methyl salicylate) discourage the growth of fungi and other potential pathogens, applying this amber mouthwash to the scalp may be ...
(Photo Credit: iStock/Getty Images) If you have scalp psoriasis, your doctor may start your treatment with products you can apply on your scalp, such as shampoos, creams, lotions, or gels.