It is because of the good moisture retention that Sodium hyaluronate is called the ideal natural moisturizing factor which widely exists in skin and other tissues. Sodium hyaluronate of high molecular weight could form a breathable film at the surface of skin to moisturize the skin, protect the skin from the bacteria , dusts and UV rays. While sodium hyaluronate of small molecular weight could permeate the derma, increase the blood circulation, improve the intermediate metabolism, promote the alimentation of skin, increase the elasticity of the skin and delay the senility of skin. Furthermore, sodium hyaluonrate could promote multiplication and dissociation of epidermal cells, eliminate the oxygen free radicals and prevent and help repair the skin damage.

alpha	D25 -74° (c = 0.25 in water): Rapport et al., J. Am. Chem. Soc. 73, 2416 (1951)
storage temp.	-20°C
solubility	H2O: 5 mg/mL, clear, colorless
form	Powder
color	White to cream
PH	pH(2g/l,25ºC) : 5.5~7.5

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