DescriptionsObagi Nu-Derm Clear is an essential component of the Therapeutic Cascade, Clear is formulated with 4% hydroquinone to correct uneven skin color and age spots. Product IngredientsAcyive Ingredients: 4% Hydroquinone Suggested Use Apply Obagi Nu-Derm Clear AM and PM- After cleansing, apply onto face and neck. Do not rinse off. NoteObagi System skin care products are prescription strength, or pharmaceutical quality products that work at the cellular level to improve the skin cell function. It is important to contact your Physician or Skin Care Specialist prior to use and purchase.Weight2 fl oz / 57g