Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Angels' Eyes Review

I just finished the first 120g bottle of Angels' Eyes. Unfortunately, I didn't see any decrease or color change in the dark circles under my dog's eyes. I followed the directions carefully. Unless it takes more than one bottle to see some improvement, I can honestly say the product didn't work on my dog. I would not purchase this product again, especially at a whopping $31+.