A process for solubilizing hydrophobic active ingredients in aqueous medium, which comprises using, as an assistant, at least one hyperbranched polymer (A) which is obtainable by reacting at least one hyperbranched polymeric compound having at least one primary or secondary amino group per molecule (a), selected from(a1) hyperbranched polyamides and(a2) hyperbranched polyureas,with(b) at least one mono-, di- or oligosaccharide.