Hair salon bleach is a chemical product used to lighten the hair. It is typically used in a salon setting by a professional hairdresser. The active ingredient in hair salon bleach is hydrogen peroxide, which works by breaking down the melanin in the hair. Melanin is the pigment that gives hair its color, so when it is broken down, the hair becomes lighter.
Hair salon bleach can be used to achieve a variety of different looks, from subtle highlights to dramatic platinum blonde. It can also be used to correct hair color that has become too dark or brassy. However, it is important to note that hair salon bleach can be damaging to the hair, so it is important to use it sparingly and to follow the instructions carefully.