Instruct: Classify Amazon reviews into positive or negative sentiment
Query: dangerous for your skin? How is it supposed to be good for your lunges?

I wasn't aware that this product is so dangerous for your skin that you have to wear gloves because it will harm your skin and there are several warnings about its dangers on the back. I don't believe that something that goes in your air humidifier and therefore in the air of your home should be so harmful, because I'm sure it can't be healthy for your lunges. I used it one time and won't use it again, also because I don't want to have to be worried that it gets in contact with my skin, what if the water spills and I don't notice and someone steps in it? Would you want your family, friends or children or even pets to get in contact with a poisonous solution without knowing?