The present disclosure concerns a bleaching tablet comprising a tablet core and a tablet shell encasing the tablet core, wherein the bleaching tablet—；with respect to its weight—；containsa) from about 10% to about 70% by weight of peroxodisulphate(s)；b) from about 1% to about 14% by weight of percarbonate(s)；c) from about 5% to about 15% by weight of disintegrant formed from cellulose-containing material, wherein the percarbonate or the percarbonates are contained in the tablet core. The present disclosure furthermore concerns a method for bleaching human hair.
