Shampoo is a hair care product used for the removal of oils, dirt, skin particles, dandruff, environmental pollutants and other contaminant particles that gradually build up in hair. The goal is to remove the unwanted build-up without stripping out so much as to make hair unmanageable.
Shampoo, when lathered with water, is a surfactant, which, while cleaning the hair and scalp, can remove the natural oils (sebum) which lubricate the hair shaft.
Shampooing is frequently followed by conditioners which increase the ease of combing and styling.
Modern hair conditioner was created at the turn of the century, when well-known perfumer Ed. Pinaud presented a product he called brilliantine at the 1900 Exposition Universelle in Paris. His product was intended to soften men's hair, including beards and mustaches.
modern science has advanced the hair conditioner industry to include those made with silicone, fatty alcohols, and quaternary ammonium compounds. These chemical products allow the benefits of hair conditioner without feeling greasy or heavy.
There are several types of hair conditioner ingredients, differing in composition and functionality:
* Moisturizers, whose role is to hold moisture in the hair. Usually these contain high proportions of humectants.
* Reconstructors, usually containing hydrolyzed protein. Their role is to penetrate the hair and strengthen its structure through polymer crosslinking.
* Acidifiers, acidity regulators which maintain the conditioner's pH at about 2.5鈥?.5. In contact with acidic environment, the hair's somewhat scaly surface tightens up, as the hydrogen bonds between the keratin molecules are strengthened.
* Detanglers, which modify the hair surface by pH as acidifiers, and/or by coating it with polymers, as glossers.
* Thermal protectors, usually heat-absorbing polymers, shielding the hair against excessive heat, caused by, e.g., blow-drying or curling irons or hot rollers.
* Glossers, light-reflecting chemicals which bind to the hair surface. Usually polymers, usually silicones, e.g., dimethicone or cyclomethicone.
* Oils (EFAs - essential fatty acids), which can help dry/porous hair become more soft and pliable. The scalp produces a natural oil called sebum. EFAs are the closest thing to natural sebum (sebum contains EFAs).
* Surfactants - Hair consists of approximately 97% of a protein called keratin. The surface of keratin contains negatively-charged amino acids. Hair conditioners therefore usually contain cationic surfactants, which don't wash out completely, because their hydrophilic ends strongly bind to keratin. The hydrophobic ends of the surfactant molecules then act as the new hair surface.
* Lubricants, such as fatty alcohols, panthenol, dimethicone, etc
* Sequestrants, for better function in hard water.
* Antistatic agents
* Preservatives
SO BASICALLY SHAMPOO REVOVED DIRT AND POLLUTANTS FORM YOUR HAIR WHILE CONDITION PUTS THE GOOD STUFF BACK IN TO FOLLOW SHAMPOO.Why do we have to use shampoos and conditioners together, instead of using just shampoo?
You won't learn anything if you don't do your own research.
You are usually meant to reference your sources of information and neither Yahoo Answers nor Wikipedia are very good references.
Why don't you look up the Wikipedia article mentioned above but then go to the library and look up the people and chemical compounds mentioned in it? Then you will have done the research, gain more knowledge and information and you will have more trustworthy references.
Best of luck in your studies, you only get out of school what you put in it.
Shampoos clean the dust from the skull and hair which is caused by applying oil and moving in the dust, and conditioners make the hair to retain its strength.
Shampoos take away the moisture of your hair and your hair becomes dry.
Therefore we use conditioners as moisterisers.
Most shampoos strip the hair of its natural oils, so they have to be replaced by conditioners.
because otherwise the conditioner fairies will be upset, i'm telling the truth, write it in your exam for full marks.
shampoos usually remove the mositure, conditioners restore it
its an IBM compatibility feature
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