Unverified85% confidenceDecision RuleTime unknown
选择皂基类洗发皂时，配料表前几位含'皂'字（如硬脂酸钠、月桂酸钠）的偏碱性（pH8-10），干性/受损发质应改选SCI（椰油酰羟乙磺酸钠）等表活型洗发皂，pH更接近5.5-7
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85%
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Long-term
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Unverified洁面用皂应选pH接近中性(5.5-7)的氨基酸皂或syndet合成洗涤块，传统碱性皂(pH9-10)长期洁面易破坏皮脂膜，仅适合身体清洁90% similarUnverified选购洗发皂优先看是否标注pH值5.5-6.5弱酸性，传统冷制皂多为pH8-10碱性，长期使用会破坏头皮酸性保护膜导致干枯毛躁89% similarUnverified皂基类香皂片pH值多在9-10偏碱性，仅适合手部清洁；用于面部应选氨基酸表活型（pH 5.5-7），成分表首位为月桂酰谷氨酸钠等而非硬脂酸钠88% similarUnverifiedSCI（月桂酰基羟乙磺酸酯钠）为主料的表活型洗发皂pH接近5.5-6.5，温和不涩，干性和中性发质应优先选此类而非传统皂基86% similarUnverified购买后可用pH试纸自测验证：将少量皂泡溶于水测试，真弱酸性应显示5-6，若显示8以上则为碱性皂基产品79% similar
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