SENSAI CELLULAR prime solution 75 ml SENSAI CELLULAR prime solution 75 ml is a luxurious, deeply hydrating and nourishing face serum from the Japanese skincare brand Sensai. This serum is formulated with advanced technologies, including Koishimaru Silk, to help skin maintain a luminous and youthful appearance. The serum helps to even out skin tone, reduce the appearance of fine lines and wrinkles, and protect skin from environmental aggressors. It is suitable for all skin types, and can be used day or night.