This a perfect balancing serum between oil and moisture, formulated to help skin find its optimal proportion. The perfect combination it being the mix of Coptis Japonica and olive oil. This maintains the oil- moisture balance and prevents the evaporation of hydration for a long lasting dewy-effect. Th Pyunkang Yul Moisture serum has a calm and cooling affect and its lightweight lotion like texture makes it glide easily and absorbs quickly.