| http://www.w3.org/ns/prov#value | - A composition according to any of claims 1 to 3 wherein the oxidising agent is an inorganic peroxygen oxidising agent present at a level of from about 0.01% to about 3%, preferably from about 0.01% to about 2%, more preferably from about 0.01% to about 1%, most especially from about 0.01% to about 0.7% by weight of the total composition. 5.
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