Long, strong, shiny hair has always been an indicator of health. Therefore, the care of the hair, strengthening the hair, it is necessary to pay sufficient attention. The environmental situation in the cities, malnutrition, hair styling hot hair dryer and so forth make the hair weak, they lose their luster, become brittle and fragile.
Hair needs support.
Let's see what is hair and why they become dull, brittle, "sick".
Hair and nails are built of same substance, and that the stratum corneum of the skin protein keratin. Hair (speaking of hair, we by default imply the hair fibre) is fibrils (threads) of soft keratin, wrapped in a layer of hard keratin scales. The outer part of hair called cuticle. The cuticle is composed of 6-10 layers of imbricate cells that coat the hair outside and play the same role as the Horny scales of the skin. It is durable and flexible, so hair with intact cuticle can be combed, pull, cheat on curlers, and even to burn with red hot pincers. But everything changes when the cuticle for some reason is destroyed. Then the hair becomes very brittle, easily splits and breaks off.
When looking at the hair you can immediately determine if they have a cuticle. The fact that the cuticle of Horny scales sealed special chemical bonds, and in addition, in the cuticle, as in the Horny layer is the lipid layer which bonds the flakes together. Smoothed and glued together flakes reflect incident light rays in the same direction, so hair looks shiny. But in the damaged cuticle flakes already sticking out in different directions and in some sections of core are missing completely, which leads to random scattering of the incident light. As a result, the hair looks dull. Hair, protruding from different sides of the scales of the cuticle comb bad and easily confused. That's why air conditioning is temporarily prilazhivaya the cuticle, noticeably improve appearance of hair.
From the anatomy of the hair, obviously, all the effects, which damage the cuticle, will certainly weaken the hair and increase the risk of breaking off the rod. On the contrary, everything that protects the cuticle, or at least temporarily removes it, the damage will reduce the damage to the hair and improve its appearance.
(Excerpt article from the book on cosmetology)
Tonic spray contains necessary building material – keratin. And wheat proteins.