A gentleman called in to our public radio show with an amazing story about Listerine mixed with baby oil. His veterinarian had recommended this combination for relieving itchy spots on his Dobermans and horses. He found that it worked and tried it for his own dandruff. He told us that it gets rid of dandruff in two to three days. Listerine contains a number of essential oils (thymol, eucalyptol, menthol, methyl salicylate) that may have anti-fungal activity. Since dandruff appears to be caused in part by fungus (yeast), it stands to reason that a fungus fighter could provide some benefit. The caller did not tell us the precise ratio of Listerine to baby oil so if you want to try it you will have to experiment.