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hair shampoos

Shampoo is the term given to hair care products that are applied to eliminate oils, dirt, skin particles, environmental pollution and other particles that may contaminate and that gradually build up in hair. Not only is the basic aim to remove the unwanted build-up, but to do so avoiding to make hair unmanageable because of so much stripping out.

When shampoos are lathered with water, they are a surfactant which cleans the hair and scalp and, alternatively, can remove the natural oils that lubricate the hair shaft. Surfactants are wetting agents. At the same time surfactants lower the tension between two liquid and make spreading easier. The term surfactant stands for “surface active agent”.

Shampoos as hair care products clean the hair by stripping sebum, the oil that the hair follicles secrete and that is absorbed by the strands of hair. In this sense, sebum forms a protective layer on the protein structure of hair against damage. However, although sebum protects hair, it tends to collect dirt, styling products and scalp flakes. Shampoos' surfactants work by stripping the sebum from the hair shafts and removing the dirt built up on it.

Both soaps and shampoos contain surfactants. But while soaps removes too much oils when it used on hair; shampoo avoids removing too much oil from the hair by using a different type of surfactants.

The process underlying hair care products resembles that of traditional soap. Skin lipids, such as sebum, stick to the surface of undamaged hair, but water is repelled. When the hair is rinsed with plain water, the lipids do not came off easily. Shampoo that is administered on wet hair is absorbed into the hair interfaces. Surfactants let the sebum be removed from the hair shaft.

Thirty years ago, shampoos rich in astringent surfactants were used for dermatological practice in order to do away with messy treatments applied to the scalp .Retail shampoos comprised aqueous solutions of surfactants conceive to clean the hair by emulsifying oils and dispersing solid material. The outcoming hard sediments were eliminated with lemon juice. However, the irritation potential of hair care products was so strong that bath was almost a nightmare. Luckily, modern mild synthetic surfactant systems were introduced making hair washing a more comfortable experience.

Nowadays, hair care products offer a delightful amount of articles intended for a wide variety of hair types and conditions with supplementary components that involve: cleansing agents (surfactants); lather foster; conditioning agents; functional options (adjust PH and viscosity); preservatives; and aesthetic agents such as fragrance, colorants, and pearlescing agents.

The surfactants that shampoos apply are syndets, which stands for synthetic detergents. They lather abundantly with hard water and wash without leaving a dulling film. They succeed in dispensing greasy materials in water because they contain a water-soluble component and a fat-soluble natural component, which wraps and encloses impurities and sebum. In this way, the hair drives away the dirt and is water soluble.

Current shampoos include a combination of surfactants, frequently between 2 and 4, in order to provide various cleaning degrees depending on hair type and demands-normal, permed, or deteriorated hair.

As regards the special ingredients hair care products nowadays contain, they most usually provide physiological benefits to the hair shaft. The variety of ingredients included improve hair quality or, at least, prevent deterioration, something not even imagined ten years ago.

Reduced amounts of panthenol have been proven to infiltrate the hair shaft and improve moisture content of the cortex. Amino acids can also penetrate into the cortex and help decrease protein deterioration after repeated washing.

A number of anti-dandruff shampoos are available to control pityriasis simplex. This is a near-physiological condition that affects lots of people all over the world and that, in serious cases, involves radical and unpleasant treatments. Selenium and imidazole shampoos are usually helpful.

Zinc pyrithione shampoos are widely available as retail hair care products. Cheaper than prescription or OTC products, they are equally effective though. Not only can deposition of zinc pyrithione micro-fine crystals reduce the condition, but can also provide a high equality, conditioning shampoo.

Other kind of specialized shampoos are those designed for infants or frequent users. These are hair care products in which mildness has been specially improved so that it is less irritating to the eyes. Most contain sodium laureth sulfate or sodium lauryl sulfate, the softest surfactants.

Shampoos are required to be preserved because, as they are essentially aqueous-based products, they have a high chance of getting contaminated.

The frequency with which you wash your hair is not what damages your hair. Instead, it depends on whether the hair care products used are properly formulated or not.

People who suffer from hair disorders should seek recommendation on hair cleansing regimens. Those who undergo reduced hair density, fragile hair or acute telogen loss might be concerned that their hair care products are either damaging or contributing their condition. They must probably need washing didactic advice. It has been demonstrated that well-formulated, mild hair care products do not interfere mitosis in the growing matrix of hair and may in fact help fragile hair through decreasing grooming force. That is why regular washing and conditioning should not be discouraged.