Adding Mouthwash to ShampooI have some lovely shampoo that leaves my scalp winter-itchy! Recently, I recalled that Listerine-type antiseptic is a good skin conditioner, so I began using it on my face. I had quite a bit left, so mixed it, half-and-half with my shampoo. I also added some drops of tea tree oil. Now, I have a wonderful shampoo that relieves all the itchiness, and leaves my hair feeling wonderful.