Cosmetics Jeanne Piaubert ISOPURE Gel Nettoyant Pureté. This cleansing gel with refreshing cosmospheres purifies the skin, removes all impurities accumulated during the day and leaves a pleasant feeling of cleanliness. Use morning and night. Scoop a small amount into your hand and mix it with a little water before applying it to your face and neck with a gentle circular massage. Rinse with water and pat dry.