As a hair care expert with over a decade of experience in the industry, I can explain how bleach works on hair. Bleach, or hair bleach, is a chemical treatment used to lighten the hair color by breaking down the natural pigments within the hair shaft. Here's a step-by-step breakdown of the process:


1. Application: The bleach mixture, which typically contains hydrogen peroxide, is applied to the hair.


2. Melting Melanin: Hydrogen peroxide, the active ingredient in bleach, penetrates the hair shaft and begins to break down the melanin, which is the pigment responsible for the hair's color.


3. Oxidation: The process of oxidation occurs, where the hydrogen peroxide breaks the bonds of the melanin molecules, effectively lightening the hair.


4. Tone: After the desired level of lightness is achieved, a toner may be applied to neutralize any unwanted warm tones and achieve a specific shade.


5. Aftercare: It's crucial to follow up with proper hair care to minimize damage and maintain the health of the hair.

Bleaching can be damaging to the hair if not done correctly, as it can cause dehydration, breakage, and structural damage to the hair shaft. It's always recommended to have this process done by a professional or to follow a well-researched method if doing it at home.

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How Hair Lightening Works. Bleach is used to lighten hair. The bleach reacts with the melanin in hair, removing the color in an irreversible chemical reaction. ... The peroxide is used in an alkaline solution, which opens the hair shaft to allow the peroxide to react with the melanin.read more >>