Instruct: Classify a given review into positive or negative sentiment.
Query: worst bottle design for product

I have used the serum for over a month now. I don't think I am in the target age range, and therefore am not seeing results. That is ok with me, as long as I am perhaps preventing deep lines or sagging.My true gripe with this product is the dispensing mechanism of the small bottle. The product is too dense, so that it sticks to the walls, instead of settling on the bottom to be pumped out.I have had to shake and pound this tiny vessel and pry it open to redistribute the product, as well as just scoop it out. The bottle is by no means empty either! I still have over half the serum in there.Badly, badly designed. I will not be buying this again for that reason. Too bad I bought a two-pack!UPDATE: I have lowered my initial 2 star review to 1 star, because I developed eczema under my eyes. The only product I was using in that area of my face was the Eye Lifting Serum. I have NEVER reacted this way to any other product before. This is definitely a product with pitfalls.