If your hair is going gray, you may be one of the estimated one-third of adult women – and one-tenth of adult men – who decide to cover it up with chemical color. The treatments range from an occasional set of reverse highlights that put darker color back into hair, all the way to coloring roots to eliminate gray every three weeks.
Some research data have suggested a higher incidence of certain cancers among hairdressers and barbers who use these preparations in their workplace, and among people who use them at home. Other studies have shown no link.
Answer:
Types of Hair Color: There are a variety of products available to color aging hair. Temporary tints are easily washed out because they are not absorbed by the outer layer, or cuticle, of the hair shaft. Semi-permanent colors do penetrate and stain the cuticle, lasting up to six to 10 shampoos. Permanent dyes are by far the most popular, making up about 80% of the market. They last the longest by creating colored molecules within the hair shaft itself.
Some research data have suggested a higher incidence of certain cancers among hairdressers and barbers who use these preparations in their workplace, and among people who use them at home. Other studies have shown no link.
Answer:
Types of Hair Color: There are a variety of products available to color aging hair. Temporary tints are easily washed out because they are not absorbed by the outer layer, or cuticle, of the hair shaft. Semi-permanent colors do penetrate and stain the cuticle, lasting up to six to 10 shampoos. Permanent dyes are by far the most popular, making up about 80% of the market. They last the longest by creating colored molecules within the hair shaft itself.
