Abstract: Disclosed is the use of UV absorbers selected from (a1) diphenylacrylates; (a2) hydroxyphenyl triazines of formula (1), in which R1, R2 and R3 independently of one another, are C1-C18alkyl; (a3) benzotriazole derivatives of formula (2), wherein R4 is a random statistical mixture of at least three isomeric branched secondary alkyl groups each having 8 to 30 carbon atoms and having the formula (2a); E1 is a straight-chain C1-C14alkyl; E2 is a straight-chain C4-C15alkyl; wherein the total number of carbon atoms in E1 plus E2 is from 7 to 29; and R5 is C1-C5alkyl; and (a4) dialkyl naphthalate; for stabilizing cosmetic compositions comprising (b) symmetrical triazine derivatives of formula (3), wherein A is a radical of formula (3a); or (3b) R6 and R10 independently from each other are hydrogen; C1-C18alkyl; or C6-C12aryl; R7, R8 and R9 independently from each other are hydrogen; or a radical of formula (3c), wherein, in formula (3a), at least one of the radicals R7, R8 and R9 are a radical of formula (3c); R11, R

Abstract: Disclosed is the use of UV absorbers selected from (a1) diphenylacrylates; (a2) hydroxyphenyl triazines of formula (1), in which R1, R2 and R3 independently of one another, are C1-C18alkyl; (a3) benzotriazole derivatives of formula (2), wherein R4 is a random statistical mixture of at least three isomeric branched secondary alkyl groups each having 8 to 30 carbon atoms and having the formula (2a); E1 is a straight-chain C1-C14alkyl; E2 is a straight-chain C4-C15alkyl; wherein the total number of carbon atoms in E1 plus E2 is from 7 to 29; and R5 is C1-C5alkyl; and (a4) di-alkyl naphthalate; for stabilizing cosmetic compositions comprising (b) symmetrical triazine derivatives of formula (3), wherein A is a radical of formula (3a); or (3b) R6 and R10 independently from each other are hydrogen; C1-C18alkyl; or C6-C12aryl; R7, R8 and R9 independently from each other are hydrogen; or a radical of formula (3c), wherein, in formula (3a), at least one of the radicals R7, R8 and R9 are a radical of formula (3c); R11,

Abstract: Use of benzotriazole derivatives of formula (1), wherein R1 is C1-C30alkyl; C1C5alkoxy; C1-C5alkoxycarbonyl; C5-C7cycloalkyl; C6-C10aryl; aralkyl; —SO3M; a radical of formula (1a) R3 is hydrogen; C1C5alkyl; C1C5alkoxy; halogen, preferably Cl; or hydroxy; R4 and R5 are each independently of the other hydrogen; or d-C5alkyl; m is 1 or 2; n is O or 1; if m=1, R2 is hydrogen; unsubstituted or phenyl-substituted d-C1-C12alkyl; or C6-C10aryl; if m=2, R2 is the direct bond; or —(CH2)p—; and p is 1 to 3; for enhancing the photostability of cosmetic or dermatologic compositions comprising at least one further organic UV absorber.

Abstract: Disclosed is the use of an effective photo-stabilizing amount of stabilizing agent (a) selected from a diphenylacrylate UV filter (a1), a benzylidene cmphor derivative (a2), an organosiloxane comprising benzalemalonate groups (a3), a fluoren derivative (a4), and a naphthalene dicarboxylic acid derivative (a5) for improving the stability with respect to UV radiation of a cosmetic or dermatological composition comprising a UV filter combination of at least one dibenzoylmethane derivative (b) and of at least one specific amino-substituted 2-hydroxybenzophenone derivative (c).

Abstract: Disclosed is the use of an effective photo-stabilizing amount of stabilizing agent (a) selected from a diphenylacrylate UV filter (a1), a benzylidene amphor derivative (a2), an organosiloxane comprising benzalemalonate groups (a3), a fluoren derivative (a4), and a naphthalene dicarboxylic acid derivative (a5) for improving the stability with respect to UV radiation of a cosmetic or dermatological composition comprising a UV filter combination of at least one dibenzoylmethane derivative (b) and of at least one specific amino-substituted 2-hydroxybenzophenone derivative (c).

Abstract: Disclosed is the use of UV absorbers selected from (a1) diphenylacrylates; (a2) hydroxyphenyl triazines of formula (1), in which R1, R2 and R3 independently of one another, are C1-C18alkyl; (a3) benzotriazole derivatives of formula (2), wherein R4 is a random statistical mixture of at least three isomeric branched secondary alkyl groups each having 8 to 30 carbon atoms and having the formula (2a); E1 is a straight-chain C1-C14alkyl; E2 is a straight-chain C4-C15alkyl; wherein the total number of carbon atoms in E1 plus E2 is from 7 to 29; and R5 is C1-C5alkyl; and (a4) di-alkyl naphthalate; for stabilizing cosmetic compositions comprising (b) symmetrical triazine derivatives of formula (3), wherein A is a radical of formula (3a); or (3b) R6 and R10 independently from each other are hydrogen; C1-C18alkyl; or C6-C12aryl; R7, R8 and R9 independently from each other are hydrogen; or a radical of formula (3c), wherein, in formula (3a), at least one of the radicals R7, R8 and R9 are a radical of formula (3c); R11,

Abstract: Disclosed is the use of an effective photo-stabilizing amount of stabilizing agent (a) selected from a diphenylacrylate UV filter (a1), a benzylidene amphor derivative (a2), an organosiloxane comprising benzalemalonate groups (a3), a fluoren derivative (a4), and a naphthalene dicarboxylic acid derivative (a5) for improving the stability with respect to UV radiation of a cosmetic or dermatological composition comprising a UV filter combination of at least one dibenzoylmethane derivative (b) and of at least one specific amino-substituted 2-hydroxybenzophenone derivative (c).

Abstract: Use of benzotriazole derivatives of formula (1), wherein R1 is C1-C30alkyl; C1C5alkoxy; C1-C5alkoxycarbonyl; C5-C7cycloalkyl; C6-C10aryl; aralkyl; —SO3M; a radical of formula (1a) R3 is hydrogen; C1C5alkyl; C1C5alkoxy; halogen, preferably Cl; or hydroxy; R4 and R5 are each independently of the other hydrogen; or d-C5alkyl; m is 1 or 2; n is O or 1; if m=1, R2 is hydrogen; unsubstituted or phenyl-substituted d-C1-C12alkyl; or C6-C10aryl; if m=2, R2 is the direct bond; or —(CH2)p—; and p is 1 to 3; for enhancing the photostability of cosmetic or dermatologic compositions comprising at least one further organic UV absorber.