This is the application of mixtures, substances or treatment to lighten the skin colour, it involves reducing the melanin content of the skin therby removing the protective gear of the skin.
To accomplish this, there are several
possible mechanism of actions
-The catalytic action of tyrosinase is inhibited (slowed or nearly
stopped)
-Inhibition of the expression or activation of tyrosinase
-The antimelanogenic agent causes less tyrosinase is generated or tyrosinase is not activated to its
functional form.
-Scavenging of the intermediate products of melanin synthesis.
-Preventing the transfer of melanosomes to keratinocytes .
-Directly destroying existing melanin .
-Destroying melanocytes.
The moment the protective gear of your skin is removed, it affects the underlay and causes the dermis to be affected. When the underlying tissues of the skin is exposed to the sun, it becomes prone to cancer.The direct ray of sunlight on the skin will strike the underlay and that will cause a reaction called Metaplasia and that is the beginning of the growth of cancer.
When the skin is bleached, healing process in the area of the skin gets slowed down. If there is a deep cut on such skin, there is likely for a breakdown of that wound to occur.
Although Skin bleaching is a cosmetic treatment to reduce the prominence of skin discolourations and even out skin colour.In cases of vitiligo , unaffected skin may be lightened to achieve a more uniform appearance.
The active ingredient in some skin lighteners is mercury and so bleaching can lead to mercury poisoning which is a silent killer.
The skin is a very important organ, it should be protected.One reason for skin bleaching is to create
an identity that is perceived as more socially acceptable and it shouldn't be so,rock your skin colour just the way it is.
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From @dhayor