Instruct: Classify Amazon reviews into positive or negative sentiment
Query: mysterious headaches

Overall the soap is as advertised. It works okay, not a miracle cure though by any means.Here's the important thing to note--after I started using it, after I read the label, after I knew it said avoid eye area...It still must have managed to seep in there despite my best efforts.I did not use it around my eye area. I never even felt it go near my eyes but it must have managed to sneak in.It gave me the absolute nastiest headaches, dry eyes, light sensitivity, etc...not like mildly annoying either--like dehabilitating pain! After about 10 days of misery it occured to me that the soap was the likely culprit. It was.