Surfactant, along with shampoo penetrates into the brain - a worthy plot turn for the sinister sci-fi thriller. Fortunately, in our life such horrors do not happen. Of course, if any of these surfactants used to feed a person (eg through probe - to drink the solution in the right quantity guinea unlikely), you can disable the heart and liver, and kidneys. However, even the tiny woman would have to "eat" at least 150 grams of lauryl sulfate to visit next world with a probability of 50%. Other pathways of surfactants in the body virtually eliminated: in brief contact with shampoo skin - an insurmountable barrier for them. As for the eyes, the best prevention of cataracts - is a natural human reaction to screw up eyes when washing. And the kids shampoos for adults, as we know, are contraindicated. For kids they produce special shampoos without tears with a particularly mild surfactants. Finally, even with prolonged use of synthetic drugs, cleaning surfactants do not accumulate in the body.
Rarely we talk about the less sinister and more ordinary hazards of surfactant - dryness of hair and skin. Structural basis of a human hair - fiber protein keratin. These fibers adsorb amino acids, short oligopeptides, water molecules, they settle and dirt: the selection of the sebaceous and sweat glands, the particles of dead skin - dandruff. Pollution, brought from the outside - the dust, soot particles - contrary to popular belief, even in urban areas are no more than 5-7% of the total mass of mud. Excess sebum causes the hair to stick together and gives them a slovenly appearance. We have to wash our hair.
When washing the surfactant and water "wedge" between the dirt and hair. After that, even a slight mechanical action separates the fat from the surface of hair, coiling in the drop. Some of the fat in this form micelles - tiny droplets surrounded by a monomolecular layer of surfactant.
But here the problems begin. SAW interacts with keratin, disrupting its structure: the protein unfolds and swells and becomes less stable. Washing takes off not only dirt but also valuable components. As a result, hair becomes dull, brittle and unruly, easily electrified. Overdried scalp coarsens, begins to slough off - there is dandruff, redness and itching ...
A few days after washing hair, surprisingly, it is easier to fit again. The fact that oil is on the hair - it's not just dirt, and the natural anti-static, water-repellent lubricant imparts elasticity, and even a weak antibacterial agent.
