Unverified80% confidenceDecision RuleTime unknown
深色纯色衬衫（藏蓝/黑/酒红）洗后易褪色，选购认准活性印染或色牛津工艺，标注色牢度≥4级；纯棉深色首次单独冷水洗，避免与浅色混洗
1
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80%
Confidence
Long-term
Relevance
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Unverified深色（藏青、深蓝、黑）免烫衬衫首洗前应单独冷水手洗一次以固色，尤其是含活性染料的纯棉款容易在前几次洗涤中掉色染白衣。购买深色衬衫应认准色牢度4级以上标注。96% similarUnverified深色（藏青、黑、深蓝）免烫衬衫首次水洗务必单独洗，涤棉混纺深色的色牢度通常比纯棉染色更好（涤纶分散染料耐洗），但纯棉活性染料深色易掉色泛旧93% similarUnverified深色（藏青、黑、酒红）纯棉衬衫首次穿着前应单独冷水洗，避免与浅色衣物同洗，因深色染料色牢度普遍低于浅色，前3次水洗易掉色染色93% similarUnverified深色（藏青、黑、深蓝）免烫衬衫易出现洗后掉色和领口袖口磨白，购买时看色牢度是否达4级以上，首次单独洗涤并用冷水92% similarUnverified深色纯棉T恤（黑/藏蓝/深灰）首次洗涤易掉色，购买时确认是否活性染色工艺，避免与浅色衣物混洗染色91% similar
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