Dextran is a polysaccharide that has water-binding properties for skin.

References for this information:

Journal of Materials Science: Materials in Medicine, May 2020, pages 1-14
Natural Products and Bioprospecting, 2019, pages 267-278
Algerian Journal of Natural Products, 2016, pages 348-357
International Journal of Pharma and Bio Sciences, December 2010, pages 569-573
European Journal of Pharmaceutics and Biopharmaceutics, May 2009, pages 232-238

See mucopolysaccharide

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