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They
constitute an essential part of grooming.
An effective
shampoo must:-
A shampoo might
contain one or more types of following ingredients:-
(a) Soap:-
Soap-based shampoos used as active cleansing ingredient may leave a residue on
the hair if used in combination with hard water, thus leaving the hair dull.
However, the residue can be removed with dilute lemon juice.
(b)
Synthetic Detergents:-
They do not tend to leave a residue, as they do not interact with hard water.
The strength of the synthetic detergent will determine whether a shampoo is
designated for dry, normal or oily hair.
(c) Acid:-
To balance the
alkaline nature of many shampoo that might leave hair looking dull and lifeless,
mild acids are added to many shampoos to achieve a "pH-balance".
(d)
Conditioners:-
The
purpose of a conditioner is to replenish the oils that detergents remove so as
to make the shampooing process more convenient. Shampoos that contain detergents
and conditioners, counteract one another to some extent, thereby reducing the
overall effectiveness of the product.
(e)
Medication:-
Some
shampoos contain ingredients to treat skin problems on the scalp, e.g. dandruff.
Medicated shampoos contain agents which slow the growth of the skin of the
scalp, and bring the inflammation of the oil glands under control, relieving the
itching. They do not encourage hair growth.
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