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Skin quality

<h2><strong>Anatomy and physiology of the skin</strong></h2>

<p>In order to fully appreciate the above qualities of a cosmetic product, let&#39;s start with the main one - anatomy and physiology. The skin separates the body and its organs from the environment and participates in the exchange of substances between them, performing the functions of absorbing substances and releasing metabolic products. The functions of the skin, like those of other human organs, are closely related to the general state of the human body.</p>

<p>The skin consists of three main layers.</p>

<ol>
	<li>The epidermis is responsible for protective functions, it does not contain blood vessels, its nutrition is carried out diffusely through the basement membrane from the side of the underlying connective tissue. It is characterized by a high ability for physiological regeneration due to mitotic division and differentiation of stem cells.&nbsp;</li>
	<li>The skin itself - dermis - is responsible for elasticity and elasticity and is divided into two layers - papillary and reticular, which do not have a clear boundary between them.</li>
	<li>Subcutaneous adipose tissue (hypodermis) performs the function of insulation, denutrients, vitamins, hormones, protects against mechanical influences, ensures mobility of the skin.</li>
</ol>

<h2><strong>Cosmetics, lipids and the stratum corneum of the skin</strong></h2>

<p>Considerable experience has been accumulated in the use of lipids in cosmetics as biologically active substances, as liposomes for the transport of BAVs, and as co-emulsifiers.</p>

<p>Profilaggrin and filaggrin are the main components of keratohealin granules in the stratum corneum, due to which it acquires its properties. Prophylactagrin is transformed into filaggrin under the influence of dephosphorylation and proteolytic cleavage by the maltriptase enzyme. This conversion is controlled by the concentration of calcium ions and serine protease.</p>

<p>Full version of the access article <a href="https://pro.bhub.com.ua/cosmetology/stan-shkiri-fiziologiya-funkciyi-ta-vibir-zasobiv"><strong>in Ukrainian</strong></a></p>


Skin condition: physiology, functions and choice of means