Histolab Azulene Complex Ampoule 72% 50ml / 1.7 fl.oz Ships from USA. Condition is New. Shipped with USPS First Class Package. Azulene complex ampoule is formulated with a variety of intensive soothing and sebum control agents such as Azulene complex, Dimethyl Sulfone, and BHA, which improve troubled skin by regulating sebum secretion and calming a wide variety of skin irritations. It is also effective in reducing skin redness and swelling. Ingredients: Azulene Complex = Soothing Properties Dimethyl Sulfone = Sebum Absorption Vegetable BHA = Sebum control Tea Tree Oil = Soothing and Anti Bacterial Properties How to Use: After toner, take 2~3 drops and apply with gentle patting.