The invention relates to a method for finishing a first type of denim, in which the first type of denim is treated at least once in an aqueous solution containing additional substances, during the treatment, the coloured aqueous solution is removed and a non-coloured aqueous solution is added. According to the invention, at least one part of the coloured aqueous solution is subjected to a decolouring process and the coloured aqueous solution is used in the treatment.
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