Active principle rich in isoflavones for use in anti-aging cosmetic compositions, extracted from the rhizome of Iris Florentina

摘要

An active principle rich in isoflavones and the method of extracting it from the rhizome of Iris Florentina. Dried and ground Iris Florentina rhizome is solubilized at 20-500 g/l in one or more solvents and heated to 30-70 deg C for at least 30 minutes. The soluble and insoluble phases are separated and the active principle concentrated. The concentrated principle is subjected to sterilizing filtration to achieve a total mesophilic flora below 100 microbes/g and a total absences of yeasts and moulds. Independent claims are included for three cosmetic compositions for combatting wrinkles, dryness and loss of viscoelastic properties of the skin: (1) a gel/firming body cream containing silicone oil 1%; cetearyl octonoate 5%; polyacrylamide/C13-C14 isoparaffin/laureth-7 3%; claimed active principle 5%; preservative 0.5%; water qsp 100% (2) a day cream containing cetearyl octonoate 3%; polyacrylamide/C13-C14 isoparaffin/laureth-7 3%; claimed active principle 3%; preservative 0.5%; water qsp 100% (3) a fluid emulsion containing arachidyl alcohol/behenyl alcohol/arachidyl glucoside 4%; myristyl alcohol/myristyl glucoside 2%; cetearyl octonoate 4%; paraffin oil 6%; cetylstearyl alcohol 2%; claimed active principle 3%; preservative 0.5%; water qsp 100%.