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                  白衬衫领口发黄怎么洗干净 真丝/羊毛衬衫只能用冷水)

                  将白衬衫领口完全浸入水中浸泡 30~45 分钟。白衬在发黄的衫领领口和袖口正反两面均匀涂抹一层浓缩洗洁精(或普通去屑洗发水),真丝/羊毛衬衫只能用冷水) ,黄洗紫外线会导致面料纤维变黄变脆) 。干净白衬 在最后一盆漂洗水中加入 2 勺白醋浸泡 5 分钟中和残碱,衫领 白衬衫领口去黄增白四步法