Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Whitening kit

Product was not what it appeared. When it arrived & I opened the box to use I noticed that the product had expired 3 yr prior. If you use white strips that are expired you don't receive the full effect of the whitening strips. Very disappointed that Amazon would mislead its customers. How disgusting that they would sell a product that has expired 3 yrs ago. DON'T BUY!!!!!!