The present invention relates to radical initiator composition which can be used in a novel colour care and stain treatment system. The present invention also relates to a method of preparing the composition and to its use. The invention provides a surfactant composition comprising a radical initiator, which is preferably a photo initiator and preferably selected from hydrogen abstraction photoinitiators, bond cleavage radical photoinitiators or mixtures thereof. The composition further comprises at least one detergency builder, and is characterised in that said radical initiator is adsorbed onto at least a portion of said builder.
