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Medicated Hair Shampoos
Medicated Hair shampoos are used to correct any disorder of
secretion in the scalp. If you have dry hair, choose a
shampoo based on cod oil, tar or lecithin. If you have oily
hair, a shampoo containing sulphur or essence of cedar
is best. Thereare dry and colouring shampoos widely used
in western countries. Dry shampoos come in an extremely
fine powder form which is sprinkled over the hair and then
removed by very thorough brushing. Their main advantage is that no wetting of the hair is required. They consist of a
mixture of synthetic detergent in powder form and mineral
salts. Mostly sodium salts are used which absorb fatty
matter. Thus the hair can be cleaned without too frequent
washing, and because of this they are particularly recommended
for oily hair.
Colouring shampoos have become very popular in recent
years for brightening the colour of the hair. They are in fact
good shampoos with a detergent base to which has been
added either a bleach or a dye which is much less harmful
than the real dyes because it does not penetrate the: hair
but only covers it with a thin colouring film.
Colouring
shampoos are generally harmless, but they can affect those
who are susceptible to allergies, by causing an eczema on
the face and swelling or irritation on the scalp. To avoid
these severe allergies, do not use colouring shampoos during
periods, pregnancy, menopause, ovarian upsets, and skin
troubles.
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