I purchased this at the Sanrio Puroland Sweets Puroland limited event a few years ago. It's unused and has been stored in a dark room. There are no noticeable stains or yellowing on the lace. This item is rare as it's not widely available. I am also listing this on other sites, so it may sell out suddenly. Please understand. ⚠️Please refrain from "liking" if you do not intend to purchase. Thank you.