Unverified82% confidenceDecision RuleTime unknown
深色纯色衬衫(藏蓝/黑/深灰)首选活性染色工艺，洗后不易褪色掉色；避免买硫化染色的廉价深色款，前几次洗涤会掉色染白色衣物且色牢度≤3级
1
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82%
Confidence
Long-term
Relevance
-
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Unverified深色衬衫(藏蓝/黑/深灰)优先选活性染色工艺，色牢度4级以上洗后不易褪色；浅色白衬衫反而要关注面料是否含增白剂，长期洗涤易泛黄93% similarUnverified深色（藏青、黑、深蓝）免烫衬衫首次单独洗涤，因涤纶混纺+免烫树脂可能影响染色牢度，深色与浅色务必分开洗；选购时认准色牢度≥3-4级（GB/T 3920标注）避免褪色染白衬衫92% similarUnverified深色（藏青、黑、酒红）衬衫首选活性染色或色牢度4级以上，避免硫化染色；洗涤前用盐水或白醋浸泡可减少初次掉色92% similarUnverified深色(藏青/黑/深蓝)纯色衬衫慎选低价活性染色，易褪色泛白；认准'色牢度4级以上'标注，深色首洗建议单独冷水洗90% similarUnverified深色（尤其藏青、黑、深紫）免烫衬衫首次洗涤易掉色，应单独冷水洗前3次；免烫整理与染色叠加会略微影响色牢度。要求耐洗牢度选浅色（白、浅蓝）或成衣染色标注「色牢度4级以上」的产品90% similar
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