Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Just not doing the job

I have had a couple different water filters, and I had to find one that was self-contained and wouldn't break off (to suit my husband, who kept breaking them). After using this filter for about a month, my hair and skin are drier than ever, hair is unmanageable, and zits are popping up on my face again. I'm on the lookout for a different one immediately.