Disclosed is the Use of UV absorbers selected from(a1) diphenylacrylates and(a2) hydroxyphenyl triazines of formulawhereinR1 is —O—R5 —COOR6 or —CO—NHR7R2 is —O—R8, —COOR9 or —CO—NHR10R3 is —O—R11 —COOR12 or —CO—NHR13R5, R6, R7, R8, R9, R10, R11, R12 and R13 independently from each other are C1-C18alkylR4 is hydrogen or hydroxy andx is 0 or 1for stabilizing cosmetic compositions comprising an organic UV absorber selected from (b1) a benzophenone derivatives of formulawhereinR14 and R15 independently from each other are C1-C20alkyl C2-C20alkenyl C3-C10cycloalkyl C3-C10cycloalkenyl or R14 and R15 together with the linking nitrogen atom form a 5- or 6-membered heterocyclic ringn1 is a number from 1 to 4when n1=1,R16 is a saturated or unsaturated heterocyclic radical hydroxy-C1-C5alkyl cyclohexyl optionally substituted with one or more C1-C5alkyl phenyl optionally substituted with a heterocyclic radical, aminocarbonyl or C1-C5alkylcarboxywhen n1 is 2,R16 is an alkylene-, cycloalkylene alkenylene or phenylene radical which is optionally substituted by a carbonyl- or carboxy group a radical of formula *-CH2—C≡C—CH2-* or R16 together with A forms a bivalent radical of the formulawhereinn2 is a number from 1 to 3when n1 is 3,R16 is an alkantriyl radical when n1 is 4,R16 is an alkanetetrayl radicalA is —O— or —N(R17)— andR17 is hydrogen C1-C5alkyl or hydroxy-C1-C5alkyl(b2) a benzotriazole derivative of formulawhereinT1 is optionally phenyl-substituted C1-C12alkyl and(b3) a triazine derivative of formulawhereinA is a radical of formulaR17 and R21 independently from each other are hydrogen C1-C18alkyl or C6-C12aryl R18, R19 and R20 independently from each other are hydrogen or a radical of formulawherein, in formula (4a), at least one of the radicals R18,R19 and R20 are a radical of formula (4c)R22, R23, R24, R25 and R26 independently from each other are hydrogen hydroxy halogen C1-C18alkyl C1-C18alkoxy C6-C12aryl biphenylyl C6-C12aryloxy C1-C18alkylthio carbo
