The ideal frequency for relaxing hair is between 6 to 12 weeks. Each person's hair requires different levels of care, so a professional hair stylist should be consulted for the most accurate estimate.
Chemical relaxers work by breaking certain proteins in the hair to unwind tight curls. The cortex of the hair is elongated, which alters the curling pattern to loosen it. Relaxers typically contain chemicals like sodium hydroxide, potassium hydroxide, lithium hydroxide and guanidine hydroxide. The higher the content of hydroxide, the more potent the relaxer is. Some relaxers require the application of a protective cream beforehand, while others contain protective ingredients instead. Typical processing time for a chemical relaxer treatment is between 20 and 25 minutes.
Although relaxers have a reputation for being damaging, many beauty experts believe that when done professionally and at safe intervals, relaxed hair can stay healthy if it is properly cared for. Regular deep conditioning treatments and trims, moisturizing the scalp and wrapping the hair at night can all help keep relaxed hair strong. Additionally, if the person with relaxed hair sets it in rollers at night, it is important to use ones that do not put too much stress on the hair, thus encouraging breakage.Learn More
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 >
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 >
Recently highlighted hair should be washed no sooner than 48 hours after it is dyed. This allows the natural oils to return to the scalp, locking the color fully into the cuticles.Full Answer >
There are several safe, natural and effective ways to darken hair without chemical hair dye. Most of the necessary ingredients are staples of the supermarket produce bin and fruit juice aisle. For example, beet juice and carrot juice are fantastic semi-permanent red dyes. Natural coloring methods are excellent for individuals with chemical sensitivities and those who wish to avoid using harsh commercial hair dye.Full Answer >