You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product?
Review title: Didn't whiten my teeth
Product review: I didn't have any problems using this product and had super high hopes for it because of the reviews. However, these trays didn't whiten my teeth at all, really. I feel like I now have to go and buy a different whitening product and spend more money. It's sad and disappointing- feels like I wasted my money.
