Instruct: Classify Amazon reviews into positive or negative sentiment
Query: NOT FOR BLONDES!!!!!!!! BEWARE

I wish that the warning about discoloration had been stronger. I HAD very light blonde hair before I used this. After I had begun to dry and straighten my hair, it turned the color of american cheese. The more that I used heat onit, the brighter that it became. I was horrified. I had to wash my hair immediately and color with a dark blonde to try and cover up this disaster. Now my hair is destroyed. I will say that after I had done my hair and it was bright YELLOW/ORANGE, it was pin straight. I assume that it will work great for other hair colors, but I am devastated by what has happened to my hair. I gave it one star because, it was straight afterwards. PLEASE PLEASE PLEASE be careful if you are a blonde.