PROBLEM TO BE SOLVED: To provide a novel pyrrolidine derivative that can further improve the bleaching effect and the decolorization effect of a bleaching agent and a decolorant using hydrogen peroxide as an oxidant such as a detergent for clothes, a mold remover, bleaching of pulp, a hair dyeing agent and the like.SOLUTION: The pyrrolidine derivative is represented by the following general formula (1) [in formula (1), Rrepresents a 1-12C (inclusive) hydrocarbon group or the like Rand Reach independently represent a hydrogen atom, a hydrocarbon group or the like Rand Reach independently represent a hydrogen atom or a specific group including a glyceryl group and Rand Rare not a hydrogen atom at the same time Rrepresents a hydroxyl group or the like and k is 0 or an integer of 1 to 7 inclusive].
