Abstract: A process is provided for the production of glycogens or an extract rich in glycogens from yeast cells, and a cosmetic composition containing them. A given quantity of yeast cells, from a specific culture or recovered as residues of a fermentation process, is subjected to an operation of enrichment in intracellular glycogens by culturing in two phases in the presence of a carbon source. The metabolism of the yeast cells is then stopped. The membranes of the yeast cells are then at least partially disintegrated to free intracellular substances, and the freed intracellular substances are subjected to at least one precipation to precipitate glycogens. A cosmetic composition comprising the glycogens is formulated in admixture with a dermatologically acceptable excipient.

Abstract: The use of extracts of tamarind seeds enriched in xyloglycans as an active agent in a cosmetic and/or pharmaceutical product for topical usage for the skin and/or other exposed parts of the body. The extracts of tamarind seeds enriched in xyloglycans are present in the cosmetic and/or pharmaceutical product for topical use in a total weight fraction comprised between 0.05% and 100%, preferably between 1% and 25% by weight.