Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Tube half empty

I don't know if this product works as I have been using it for a couple of days. It goes on smoothly, it's very creamy. That's all I can say right now.What I wanted to comment on is the amount of the product. It is half empty! I kept on squeezing and squeezing and only started to get product of out the tube when I've squeezed until the middle of the tube.This is a rip-off!