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Chemical Structure of Hyaluronic Acid?
Its consistency, friendliness to the tissues allows it to be beneficial in cosmetic products for skin care as a magnificent moisturizer. As HA is one of the most water-loving molecules, with large number of benefits for the human body, it can easily be described as "nature's moisturizer".

Hyaluronic Acid is found naturally in most every cell in the body. It occurs in high concentrations in specific body locations where it serves a different function. For a pity, HA has a half-life, which is the time it takes for the molecule to get broken down and excreted from the body. It lasts less than 3 days and possibly even as little as one day in the skin. For this reason, it is needed the body continually replenish itself with HA.
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In the Skin

If we consider the Hyaluronic Acid as the water that keeps the collagen moist and elastic, then collagen is continuously surrounded and nourished by the gelatinous HA substance. Do you know why is young skin is smooth and highly elastic? It is because it contains high concentrations of Hyaluronic Acid, which helps skin stay healthy. As we grow older, the body loses its ability to maintain the same concentration of HA and collagen in the skin. When levels of HA decrease in the skin, so goes the ability of the skin to hold water. The result is that the skin becomes drier and loses its ability to maintain it's hydration, so hyaluronic acid acts as a space filler by binding to water and thus keeping the skin wrinkle-free.
Hyaluronic Acid can be found naturally in almost every cell in the body, although it is found in the greatest concentrations in the skin tissue. Almost 50% of the bodies hyaluronic acid is found here. It is found in both the deep underlying dermal areas as well as the visible epidermal top layers, as with young skin is smooth and elastic and contains large amounts of HA that helps keep the skin stay young and healthy. The HA provides continuous moisture to the skin by binding up to 1000 times its weight in water, although with age, the ability of the skin to produce HA decreases.
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Scalp Tissue, Hair Follicles and consistence of HA

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The lips are a core of skeletal muscle covered by skin tissue and the dermal layer of the lips is composed primarily of connective tissue. Its components hyaluronic acid and collagen give the shape (structure) and
plumpness to the lips. The HA binds to water creating a gelatinous fluid that hydrates the surrounding tissue and keeps the collagen nourished and healthy. The result is healthy, well hydrated and plump lips that are well protected from the environment.
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Eyes and Hyaluronic Acid

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Hyaluronic Acid in Gum Tissue

Hyaluronic acid is also used as a lip filler during cosmetic surgery. Personal-care products containing hyaluronic acid are also sometimes applied to the skin to promote healing of different reasons as burns and wounds. Sometimes it is claimed that topically applied hyaluronic acid can help reverse signs of aging in the skin.
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