If you have sparse hair, use shampoo that increases the amount of hair - such as "SunSilk Volumiseur". Shampoos, mechanical strengthening and thickening hair, usually contain cationic polymers - quaternary derivatives of hydroxyethyl cellulose, and others. They are adsorbed by the hair, interacting with the carboxyl groups of keratin, which are released in violation of its structure. Thus, the more severely damaged hair, the more polymer it binds. Cationic polymers attached to hair not only strengthen but also smoothen, remove the electric charge and facilitates combing.
Shampoos, which are recommended for frequent washing of hair, often also contain cationic polymers. This is a variation on the theme of "Vidal Sassoon Wash & Go" and "Express Studio Line", shampoos "Aldi Mildeen", "El Vital", "Finesse", "Modic" and some others. In addition to the components that enhance shine and hair styling, they may contain substances that speed up the drying and repel pollution (the "like water off a duck's back"), such as silicones. Salon shampoos such as "two in one" does not require a final rinse conditioner. They are primarily designed for business people and young people - those who hurry and wants to always be in the form.
It is not necessary to use a long one and the same shampoo, even the most suitable for you. Any shampoo or less inhibits the growth of microorganisms that live on the scalp. But after a while cutaneous microflora, microfauna adapts to new conditions - about how disease-causing bacteria to antibiotics, often. Excessive proliferation of skin microorganisms provokes the appearance of dandruff. That is why it is necessary to change the shampoo from time to time.
A few more words about the other components of the shampoo is not so much for the purity and beauty of hair, but for the comfort and pleasure. Above all, they are foam stabilizers and thickeners. To get a thick and rich foam it is needed to add mono- or diethanol amide, fatty acid monoglycerides, water-soluble cellulose ethers, polyacrylic acid and its derivatives, gum plant and bacterial origin. Nice creamy consistency add foam protein hydrolysates.
Transparent, almost like water, shampoos contain surfactants with relatively short alkyl chains. Surfactants in combination with monoethanolamide, etilenglikolstearate create a "pearl" tint in shampoo.
The beauty is beauty, but one of the major current trends in the production of shampoos - a set of purely functional components. Extra component in the recipe - it is a potential allergen. Probably you have noticed that in recent years we had fewer densely stained and heavily scented shampoos, which were very popular a decade ago. Now they rarely use latex to give shampoo opal, "egg" or "pearl" look. In many countries, formalin as a preservative is forbidden.
However, it is well known that allergens can be both synthetic and natural substance. Allergic reaction it is very individual. It is better to be guided not by words inscribed on the bottle, but your own feelings and the advice of a doctor.
