What are claimed are synergistically active bleach activator mixtures consisting of a) a hydroxybenzoic acid derivative of the formula 1 in which R is C.sub.8-C.sub.11-alkyl, and b) tetraacetylethylenediamine and/or 1,5-diacetyl-2,4-dioxo-1,3,5-hexahydrotriazine.