Compositions for improving the health and appearance of skin

摘要

Provided herein are microalgal skin care compositions and methods of improving the health and appearance of skin. Also provided are methods of using polysaccharides for applications such as topical personal care products, cosmetics, and wrinkle reduction compositions. The invention also provides novel decolorized microalgal compositions useful for improving the health and appearance of skin. The invention also includes insoluble polysaccharide particles for application to human skin.

主权项

1. A method for producing a particulate exopolysaccharide for use in a skin care product, the exopolysaccharide produced by microalgae of the genus Parachlorella, the method comprising:
cultivating microalgal cells in a cell culture medium so as to cause the cells to secrete exopolysaccharide into the medium; isolating a purified microalgal exopolysaccharide from the medium; drying the purified exopolysaccharide; heating dried purified microalgal exopolysaccharide produced by the drying step at a temperature in the range of 135 to 160° C.; and generating a particulate exopolysaccharide having an average size of between 0.1 and 400 microns; wherein the particulate exopolysaccharide forms a gel on contact with water and continues to swell for at least 4 hours.