Called PTR cs at 1 800 787 7546
Unlike other unstable retinol products, this one according to manufacturer is good for 3 years. Code is on bottom of bottle- ie 7G04. Take first 2-3 numbers/ letter. 7 would be year manufacturered 2017, G would be July.
A -K, A for Jan, B for Feb, C for Mar.
Ebates has 8% qvc today.
Hope this helpful.