Brand from United States: Kiehl's. A new fermented essence containing ferulic acid from Kiehl's! Kiehl's' new fermented essence, which is a mixture of oilseed rape extract slowly fermented over 120 hours by a careful processing process and naturally-derived ferulic acid, so that it will spring up and become moisturized and glossy. It leads to a smooth skin. How to use: Shake well before use before use. After washing your face, take an appropriate amount (small 500-yen coin) and gently apply it from the entire face to the neck. Avoid in the immediate vicinity of your eyes. In case of contact with eyes, rinse with water.