Pure natural clove bud essential oil is used for hair treatment, skin care, toothache, acne and tooth pain. Clove bud oil is also used to help ease respiratory problems, such as cough, colds, and tuberculosis. Add one drop of diluted clove oil onto a small cotton ball to relieve tooth or gum pain. Press the cotton ball onto the affected area for 10 to 15 minutes. You may also add two drops of clove bud oil to a cup of warm water and use this as a gargle.