Clove Oil INCI: Eugenia Caryophyllus (Clove) Flower Oil Mode of Use: Use about two drops in 5ml of olive oil. You can use any other oil if you want. Use it after diluting it with some olive oil as it can irritate to the skin benefits. Clove oil is good for numbing the pain of a toothache and can be used in place of conventional numbing agents before dental work. It acts as an antiseptic and analgesic. In case of fungal infection, apply the diluted clove oil on the affected area. For acne, you can either apply the oil over the affected area or use it as a face pack.