Disclosed are aqueous polymer solutions stabilized with a preservative mixture comprising 0.01 to 0.2 wt.% ethylhexylglycerin, 0.001 to 0.01 wt.% 2-methylisothiazolinone, and 0.05 to 0.5 wt.% phenoxyethanol. Said stabilized polymer solutions are suitable for cosmetic preparations such as skin and hair care products, decorative cosmetics, and cosmetic cleansers.