The shampoo blue or tint, is called as such because its color is that. His main function Its the nuance the hair blond.
What does this mean!? It means that your aptitude is Give a certain tone to your hair, harmonizing its colors.
As you can see in the image below, the blue / violet color has on the opposite side the orange, reddish and yellow colors, this implies that the shampoo being blue will make your orange and yellow shades of your hair disappear.
Many times when the hair is discolored and dyed a light color, especially blond, as time passes and washes the color is sweeping and the color becomes a much more yellow and / or orange color, typical of color oxidation, which does not give the hair a natural appearance.
If you want to know more about blue shampoo, then read "the 5 advantages of using a shampoo shader"
This shampoo It is composed of a semi-permanent dye composed of peroxide and bleach. These components have a high degree of chemical compounds that dehydrate and mistreat your hair if you use it daily.
Imagine it is as if you applied dye every day, this It will make your hair dry, look dull and frizzy. Therefore, we consider that the ideal is that apply once or twice (at most) times a week.
You want to have shiny, silky hair, then find out more about "5 benefits of jelly in hair"
You should also be careful and control the time you leave the blue shampoo in your hair You will apply this shampoo normally, as you apply your daily shampoo.
When the hair is wet, the hair pores are open and therefore more permeable to absorb more quickly everything you apply. Therefore, ideally, do not leave your blue shampoo no more than 5 or 7 minutes, as if you exceed your hair it will absorb the dye in excess and it will look dull and very artificial. Besides that will start drying it out.
Other problems that may arise from the use of blue shampoo is that, if you are one of those people who have dry skin, then this will cause the scalp will dry out even more than normal, some irritation, itching and redness may result as a consequence of this. Therefore, in this case we recommend that you perform nutrition treatments on your hair, at least once every 10 days. But in the event that this pursues, it is best that you turn to a dermatologist so that I can indicate some type of treatment.