Use of at least one compound of formula Ia, Ib, Ic or Id ** Formula ** of R2 to R6 and R9 to R13 each are independently selected from each other from H, OH, C1 to C20 straight chain alkoxy groups or branched, where the alkyl chains each can also be interrupted by oxygen or nitrogen, C1 to 20 straight or branched chain alkyl groups, where the alkyl chains each can also be interrupted by oxygen or nitrogen, C3 alkenyl groups up to C20 straight or branched chain, C1 to C20 hydroxyalkyl groups straight or branched chain, where the hydroxyl group can be attached to a primary or secondary carbon atom of the chain and in addition the alkyl chains can also be interrupted each by oxygen or nitrogen, C1 to C20 straight or branched chain hydroxyalkoxy groups, where the hydroxyl group or groups may be attached to primary or secondary carbon atoms of the chain and in addition the alkyl chain can also be interrupted by oxygen, C1 to C20 straight or branched chain alkylamino groups, C1 to C20 straight or branched chain dialkylamino groups, or R2 to R6 and R9 to R13 each represent independently of one another a carboxylic acid, phosphoric acid, sulfonic acid, sulfuric acid or sulfonyl function which may optionally be esterified or alkylated with C1 to C20 straight or branched chain alkyl groups or C3 to C20 straight or branched chain alkenyl groups, or are the salts of the compounds of the formula Ia up to Id as antioxidants for the preparation of cosmetic or pharmaceutical preparations, in particular dermatological, or of food products or food supplements or for the preparation of household cleaning products.Uso de al menos un compuesto de fórmula Ia, Ib, Ic o Id**Fórmula** de R2 a R6 y de R9 a R13 cada uno se seleccionan independientemente entre sí entre H, OH, grupos alcoxi de C1 hasta C20 de cadena lineal o ramificada, donde las cadenas alquílicas cada una también pueden estar interrumpidas por oxígeno o nitrógeno, grupos alquilo de C1 hasta 20 de cadena lineal o ramificada, do
