Which due to its hygroscopic nature is able to absorb and retain water in the stratum corneum and is considered as the humectant and plasticizer of keratin), propylene glycol, glycerin and sorbitol, which are the most widely used classic humectants and because of their hygroscopic nature can absorb water, both from the atmosphere as of the skin, urea and lactates.
As for example the cutaneous dryness, that is due to a loss of the protective outer layer. Nourishing or night creams are used that have reengrasantes, vivificantes qualities nulante, that incorporate active matters that revitalize and stimulate the functions of the skin and lubricants that improve the softness and the emoliencia.
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