Chanel Blue Serum Revitalizing Concentrate -Brand New In Box -Discontinued -Batch Code # is 6102 - Production Date per the Cosmetics Calculator is 02/2021 -Since this has been discontinued, I am not responsible for any smell, color and/or consistency A lightweight, nourishing serum that helps keep skin looking younger, firmer and healthier. After 4 weeks of use, skin appears smoother, with a 35% reduction in the appearance of wrinkles; skin appears both 26% firmer and 37% more even