It can be bleached using regular aspirin from the pharmacy. Compared to other bleaching agents, it is safe, cheap and effective. Mix 5 pieces (325 mg) of aspirin in 6 liters of hot water, put the bleached clothes in it and let it soak for 8 hours. Then wash in the washing machine as usual. Adding 3-4 aspirins to the wash water is also effective. Aspirin, a weak acid solution, has bleaching properties as well as stain removal.