Bringgreen Zinc Teca Blemish Serum I used the main bottle about three times. I am selling it because it doesn't suit my skin. There is a little dirt on the handle of the dropper. The refill is new, unused, and unopened. I purchased the set in August of last year. The expiration date is November 25, 2027. Please refrain from purchasing if you are sensitive to items that have been handled by another person.