Why Peroxide is Damaging:
* Lifts the Cuticle: Peroxide works by opening the hair's cuticle layer (the protective outer layer). This allows the bleaching or coloring agents to penetrate the hair shaft and change the pigment.
* Oxidizes Melanin: Peroxide oxidizes the natural melanin in your hair, which is what gives it its color. This process is what lightens the hair.
* Weakens Hair Structure: The process of opening the cuticle and oxidizing melanin weakens the hair's structure, making it more porous, brittle, and prone to breakage, split ends, and dryness.
* Can Cause Protein Loss: Repeated or excessive use of peroxide can lead to significant protein loss in the hair, further weakening it.
* Scalp Irritation: Peroxide can irritate the scalp, causing burning, itching, and redness. In severe cases, it can even cause chemical burns.
Why Hair Can Turn the Wrong Color:
* Underlying Pigment: Your hair naturally contains underlying warm tones (red, orange, yellow). When you lighten your hair with peroxide, these underlying tones can be exposed. If you're not careful, you can end up with brassy, orange, or yellow tones instead of the desired cool blonde or lighter shade.
* Uneven Application: If the peroxide is not applied evenly, some sections of your hair may lift more than others, resulting in a patchy or uneven color.
* Incorrect Peroxide Volume (Developer): The strength of the peroxide is indicated by its volume (e.g., 10 vol, 20 vol, 30 vol, 40 vol). Using too high a volume can cause excessive damage and unpredictable color results. Using too low a volume may not lift enough and lead to brassiness.
* Toners and Corrective Products: Sometimes, after bleaching, toners are used to neutralize unwanted tones. If not chosen or applied correctly, toners can also contribute to the wrong color.
* Hair History: Previous color treatments, even if they were years ago, can affect how your hair reacts to peroxide. Color buildup or staining can lead to unexpected results.
When is peroxide used?
Peroxide is used in many hair products such as:
* Hair dye: Lightens the existing hair color, and deposits the new color.
* Bleach: Used to lighten hair to a new shade.
* Highlight: Used to lighten individual strands.
Important Considerations:
* Professional Help: The best way to minimize damage and achieve the desired color is to consult a professional hairstylist. They have the knowledge and experience to assess your hair, choose the appropriate products, and apply them correctly.
* Strand Test: Before applying peroxide to your entire head, do a strand test on a small, hidden section of hair to see how it reacts.
* Proper Aftercare: If you do use peroxide, be sure to use moisturizing and protein-rich conditioners and treatments to help repair and strengthen your hair.
* Lower Volume Developer: Opt for a lower volume developer whenever possible to minimize damage.
* Limit Frequency: Avoid bleaching or coloring your hair too frequently to give it time to recover.
In summary, peroxide can be very damaging to hair, and it can absolutely lead to undesirable color results if not used correctly. If you're considering using peroxide, it's crucial to be informed, cautious, and ideally, seek professional help.