Is the use of skin cleansers an other form of commercial or is it really essential to people 's hygiene?
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-> Penetration of skin folds and follicles orifices by pure water is inefficient.
Bacteria and most types of dirt are not water soluble, and therefore, require large ammounts of water for removal from the skin
Part of the dirt and grime is redeposited on the skin if only a limited quantity of water is used. The final result is a mere redistribution of dirt, and not its removal.
To counteract these failings, surfactants are used to facilitate wetting of skin and prevent redeposition of dirt particles by emulsifying, solubilizing, and dispersing them. >>
Numerous surfactants, like the ones we saw in the chapter I wrote before : The surfactants : Defifintion[http://cosmetic-formulation-leeloutte.blogspot.com/2007/02/surfactants-definition.html] , have been developped in recent years and are contained in skin cleansers as shower gels.
Bacteria and most types of dirt are not water soluble, and therefore, require large ammounts of water for removal from the skin
Part of the dirt and grime is redeposited on the skin if only a limited quantity of water is used. The final result is a mere redistribution of dirt, and not its removal.
To counteract these failings, surfactants are used to facilitate wetting of skin and prevent redeposition of dirt particles by emulsifying, solubilizing, and dispersing them. >>
Numerous surfactants, like the ones we saw in the chapter I wrote before : The surfactants : Defifintion[http://cosmetic-formulation-leeloutte.blogspot.com/2007/02/surfactants-definition.html] , have been developped in recent years and are contained in skin cleansers as shower gels.
