Compound Benzoin Tincture or CBT is a versatile Topical Antiseptic that protects and heals Canker Sores in and around the mouth. A few drops of Benzoin Tincture when added to Hot Water in the Steam Inhaler helps relieve symptoms from Common Cold and Bronchitis. Benzoin Tincture when applied to the skin, forms a tacky surface so that the Gauze Dressings and Bandages Stick better and stay in place.