Unverified75% confidenceDecision RuleTime unknown

茶树精油（Tea Tree Oil）确有抑菌作用，但有效浓度需达5%以上才有意义，市面很多'含茶树精油'产品浓度＜1%仅作宣传噱头，选购看成分表排序而非是否'含'该成分

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Unverified除薰衣草和茶树精油外，绝大多数纯精油不可直接接触皮肤，需用荷荷巴油等基础油稀释至1%-3%浓度（每10ml基础油加2-6滴精油）64% similar Unverified配料表应≤5种成分，且不含Fragrance/Parfum（香精）、Phenoxyethanol超标、Paraben类防腐剂；真正温和的产品香味应来自基底油本身或不添加，宣称'淡淡奶香/花香'的多为添加香精63% similar Unverified纯度越高越贵但用量越省，扩香器每次仅需3-5滴；若主要用于房间扩香，选择已配好的复方扩香油（含载体）反而比纯精油更划算且免调配63% similar

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