Hydrogen peroxide raises the scales. It is a source of active oxygen that destroys (burns) the natural pigment of the hair by replacing it with a false pigment (color). Hydrogen peroxide damages the hair after the first application. This reaction takes place in an alkaline medium at pH 9 - 9.5 (therefore ammonia is added). The alkaline environment damages the hair, making it thin and brittle.
Under the influence of hydrogen peroxide, the scales open on the hair and destroy the natural pigment. Natural hair dyes do not lift the scales of the hair, do not change the natural structure of the hair or destroy the natural pigment, they color the hair.
Of the natural colors, henna is the most famous. Already in ancient Egypt, its parchment was used to dye hair and skin. It is obtained from the leaves and stems of the henna plant, which are ground into a reddish-yellow powder. There are no harmful ingredients, and it gives the hair durability and shine. It has a tightening effect, so it is used on its own with oily hair. For dry hair, a little vegetable oil (preferably jojoba) should be added.
If henna powder is mixed with other natural dyes, different color compositions are formed. The use of such colors is much simpler and safer and does not harm the hair. In fact!
Natural hair dyes of the French house j.f.lazartigue based on algae, henna and other plants, without ammonia and peroxide. They do not destroy but wrap the hair first with algae gel and then with dye. They strengthen the hair and give it shine. 100% cover gray hair, but such dyes from dark hair can not get light.
Natural hair color j.f.lazartigue, without peroxide, without ammonia, without parabens, 100% covers gray hair.