Understanding How Hair Color and Bleach Work > 자유게시판

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Hair coloring and bleaching are popular beauty treatments that transform the appearance of hair, but behind the vibrant shades and lightened strands lies a complex scientific process.

Your hair’s color originates from a blend of two pigments—eumelanin for depth and pheomelanin for warmth—and their relative concentrations create your unique shade.

The combination and concentration of these pigments determine your natural China Hair Extension Manufacturer color.

Hair coloring products typically contain dyes that either deposit new color onto the hair or chemically alter existing pigments.

Surface-level colorants, like temporary and semi-permanent dyes, cling to the outer cuticle and fade gradually with each wash.

To achieve lasting color, permanent dyes contain tiny molecules capable of slipping past the cuticle and into the hair’s inner layers.

Once inside, these molecules react with hydrogen peroxide to form larger, stable pigment molecules that cannot easily wash out.

Lightening hair through bleaching is a far more destructive chemical intervention than standard coloring.

Bleach typically pairs hydrogen peroxide with an alkaline agent like ammonia to lift the cuticle and oxidize melanin.

As the cuticle lifts, peroxide molecules attack and fragment melanin granules, rendering them invisible and leaving hair lighter.

This lightens the hair, but it also removes the hair's natural protective layer and can leave the hair feeling dry and brittle.

The deeper the lift, the greater the structural compromise—this is why heavily bleached hair needs intensive repair treatments.

Maintaining the proper pH balance is essential for both processing and post-treatment hair health.

Naturally, your hair maintains a mildly acidic environment to keep the cuticle smooth and sealed.

To open the cuticle and allow pigment to enter, these products are formulated to be strongly alkaline.

The raised pH causes the cuticle scales to lift, creating pathways for dyes and bleach to reach the cortex.

Post-treatment acidic rinses or conditioners are crucial to reseal the hair and prevent color fade and moisture loss.

The hair’s ability to absorb dye or bleach is directly linked to its porosity, which varies greatly between individuals.

Heat, sun, relaxers, and prior color treatments all compromise the cuticle, increasing absorption rates and speeding up processing.

This can lead to uneven results if not accounted for during application.

A strand test is a standard practice to evaluate processing time, lift potential, and possible damage before committing to the full head.

Today’s dyes often include nourishing ingredients such as argan oil, hydrolyzed keratin, and silk proteins to buffer chemical stress.

Many premium formulas now feature vitamin E, green tea extract, or ubiquinone to neutralize free radicals created by peroxide.

No matter how advanced the formula, changing hair color always involves breaking molecular bonds and restructuring the hair’s core.

When you grasp the underlying chemistry, you gain the ability to anticipate outcomes and protect your hair effectively.

Armed with this knowledge, you can set realistic goals, select appropriate formulas, and implement the right aftercare routine.

Your hair is a dynamic, porous protein filament that reacts chemically—treat it as such, and it rewards you with vibrancy and strength.