Permanent hair dyes are those that will allow you to achieve a permanent effect on your hair. The desired color of the dye penetrates the hair structure and stays on its surface permanently. Permanent dyes contain a coloring cream with special ingredients that work like a door key and open the outer layer of the strands, thus allowing special coloring dyes to penetrate them easily and quickly. The most common such ingredient in dyes is ammonia. The second irreplaceable ingredient of such dyes is an oxidizer, whose task is to activate the color (dye) of the dye. Despite the strong interference with the natural structure of the strands, we do not have to worry that they will be damaged during this procedure. The dyes available on the market have many care ingredients that take care of the healthy condition of the strands.