Thank you for viewing. This is a brand new, unused bottle of C Serum. A brightening serum containing Vitamin C. To make the easily-degraded Vitamin C more skin-permeable, it has been made water-soluble and powdered. Unlike other cream bases, it is easy to use even in the warmer months when you tend to sweat more. It is also effective when used in conjunction with retinol as an anti-inflammatory agent to reduce redness. ■ Contents: 50 mL / 1.7 Fl. Oz. ■ Price: 16,280 yen (tax included) EXP 12/2027 Purchased at a clinic in Japan. Stored at home, so please consider this if you understand.