Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Beware buying online.

I have bought this product twice now from Amazon (different sellers) because I can't find it anywhere else. Both times the product was "expired". The wax was all dried up and the strips were unusable. Both times I got a full refund, so I'm not complaining about that.But I would be wary of buying these anymore because it appears to me that the product is discontinued and if you see it for sale, they're probably old.This last time I bought it, one of the packages was so old it was discolored (yellowed with age)!!If anyone knows of another product that works as well as this one (when new) I'd love to hear about it. I've tried tons of others and none work as well.