摘要 |
A manufacturing method of preservative free water-soluble cosmetics containing amino acids is provided to inhibit deterioration of cosmetics, and changes of content of amino acids capable of moisturizing the skin and product properties without using preservative. The preservative free water-soluble cosmetics containing amino acids are manufactured by sterilizing the water-soluble cosmetics in a vessel at 101-121 deg.C and 0-2.0 kgf/cm^2 for 20-50 minutes, wherein the water-soluble cosmetics contain water, humectant such as amino acid, glycerin, butylenes glycol and hyaluronic acid and thickening agent such as cellulose, dextrin and dextran; and the cosmetic vessel is pipe glass, natural rubber cap, polypropylene aluminum cap and aluminum pouch packing materials.
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