Hydrogen peroxide is the primary ingredient in hair bleach. Most hair bleach contains between 6 percent and 10 percent hydrogen peroxide. Other ingredients include ammonium persulfate, potassium persulfate and sodium persulfate.Know More
Hydrogen peroxide is the bleaching agent that reacts with hair to remove color. Persulfates are added to hair bleach to increase the rate of the chemical reaction. Care must be taken when using hair bleach containing hydrogen peroxide. Small concentrations of hydrogen peroxide can cause the skin to tighten and whiten. After using hair bleach, the skin should be rinsed with running water. Skin burns are possible when bleaches containing higher concentrations of hydrogen peroxide are used. Accidentally ingesting hair bleach containing hydrogen peroxide may cause stomach upset and vomiting. Ingesting large amounts of hydrogen peroxide can irritate and burn the stomach and usually requires a trip to the emergency room.
According to the Australian Department of Health, persulfates can have detrimental physical effects when they come into contact with skin. An acute allergic reaction might cause swelling, itching and reddening of the skin, and repeated exposure can lead to dermatitis, a skin disorder that causes large, scaly and itchy rashes to appear. It is important to exercise caution when using products containing hydrogen peroxide or persulfates.Learn more about Chemical Hair Treatments
There are two ways that hair extensions can be bleached. A person can buy bleaching kits or buy the products separately and mix them at home. If she is mixing the products at home, she needs to buy bleach powder, toner and a developer with a volume that does not exceed 20. An amount more than this can dry the extensions out.Full Answer >
An easy method of lightening your hair with ingredients found in the home uses honey, vinegar and olive oil. Not only does this recipe not contain harsh chemicals that damage hair, but the olive oil keeps hair from drying out while you lighten it.Full Answer >
Bleaching hair is very damaging. Though it may lighten the hair by removing the color through a chemical reaction with melanin, the result is an open hair shaft. The moisture and oils provided by the scalp are stripped from the shaft, according to Anne Marie Helmenstine for About.com.Full Answer >
Hair turns green after dyeing because of uneven pigment absorption or exposure to high levels of chlorine. This problem usually occurs in bleached blond hair as a reaction to a darker dye with cool undertones. Green hair is easily preventable but difficult to fix without professional help.Full Answer >