巧盖白发（Skillfully covered with gray hair）.docVIP

巧盖白发（Skillfully covered with gray hair） As an excellent hairdresser, you must have a basic knowledge of hair structure, growth pattern, function, properties, and their chemical properties and physical and mechanical properties, First of all we know about the change of pigment faded when natural black hair, black hair in the drift to 1 ~ 4 degrees when the first lost is the main colors of blue, faded to 4 ~ 7 degrees, get rid of is mainly red, yellow is finally removed. Two, gray hair and black hair compared to, from the color point of view, there is no blue, red, yellow three pigments, if you add enough Huang Honglan, gray hair will become black. Three if only in white with red and yellow two kinds of pigment, in any case can not be below four degrees, if coupled with blue on this basis, up to a certain proportion will become black, which shows blue plays a decisive role in the cover of white hair. Four we distinguish between warm and cold colors, it is actually containing blue pigment and red yellow pigment ratio, such as 4.16 main color is blue, pair of colours are red, that is to say, much more than the content of blue pigment red pigment, because the content of blue pigment cover white hair effect decision. Therefore, the same degree of cold tone 4.16 is better than the warm tone 4.45 gray hair effect, and 4 is more effective at 4.3 than primary color. Five, white hair in nature, can be divided into two kinds of resistance and normal; in quantity, divided into 10%, 20%, 30%... From the distribution of the situation, divided into local and overall gray hair. Six, from customers on the starting point of gray hair on, a is to cover the white hair; B to cover white hair, but also fashion; C white hair is not too obvious, mainly the fashion. Different designers will have different customer groups; in addition, different regions, cultural, economic income and individual requirements are not the same. Seven here I analyze several common problems about a hair are not ma