Benzoin 55% (Organic), Benzoin Tincture is used in aromatherapy to help relieve cold and cough. Topical (Adults): Mix 1 drop in 1/2 teaspoon (2.5ml) of vegetable oil; apply to the affected area 3 times a day. Inhalation: Apply 1 to 6 drops to a facial tissue and inhale occasionally.,Styrax benzoe tonkinensis