The lady at Sally's recommended this to me when I bleached my hair back to blonde. It does a good job of calming down the brassiness in my hair without damaging it. If I use it too long then it leaves my hair an interesting silver color but it washes out so no worries. The smell is really odd and I could go without it but it's tolerable for me. I recommend this to anyone trying to get as cool-toned of a blonde that they can.