I use L'Oreal's hair color (Light Brown only) products exclusively and love the permanent color kit and root spray. I purchased this product in Light Brown and it turned my hair black. I am very upset and don't even want to leave my house! On the positive side, the applicator is an outstanding innovation and the handy pop out circle on back to hold the applicator when mixing the solution is a great bonus! Unfortunately, I won't be using this again.