Shiseido Vital-Perfection White Circulator Serum has the following features: With exclusive Shield Builder WT, it intensively improves persistent age spots that can appear, darken and expand with age. Inhibits the production of melanin with effective whitening ingredient 4MSK**, which causes dark spots, and also removes accumulated melanin from deep within. Maintains moisture for up to 24 hours to keep skin smooth and supple, and protects skin against damage caused by environmental stressors. Apply with a simple massage to intensify the serum’s effects, which promotes microcirculation and helps enhance skin’s metabolism. Developed to provide skin with absolute comfort, the dewy, velvety formulation penetrates deeply. *in vitro tests.