Tincture of violet is a topical antiseptic that is used for cuts, abrasions and insect bites, notes the National Institutes of Health's DailyMed. This tincture is also utilized in the treatment of certain types of skin infections. It is an over-the-counter product that contains 1 percent gentian violet and is also called gentian violet tincture.
Gentian violet tincture is a dye useful for small injuries, such as minor burns, because it can prevent infections. However, it should not be used on deep lacerations or bad burns, states DailyMed. It can also be a treatment for certain fungal skin infections, including ringworm and athlete's foot, states WebMD.
To apply this antifungal medicine, a cotton swab with the tincture is used only on cleansed and dry skin areas that are affected. It can be applied a few times a day. However, the tincture does stain the skin.