(1 Unit Count) numbuzin 6 Deep Sleep Mask Serum 1.69 fl oz All products listed are authentic and purchased from Korean supplier. Listed product last UP TO 1 YEARS from date product was manufactured. Product is not opened and has a seal. Package Dimensions ‏ : ‎ 4.72 x 2.01 x 2.01 inches; 6.74 Ounces HOW TO USE Apply 3-4 drops to the entire face daily. Add a thick layer to areas with special concerns. #NUMBUZIN6 #NUMBUZINSERUM #KOREANSKINCARE