Superseded92% confidenceDecision RuleTime unknown
面部或全身按摩使用时，精油稀释浓度应为1%-2.5%（即10ml基础油加2-5滴精油），面部护理不超过1%以防刺激
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This knowledge claim has been superseded by newer content
精油用于皮肤按摩必须用基础油（荷荷芭、甜杏仁等）稀释，面部浓度≤1%（10ml基础油加约3滴），身体≤3%，纯精油直接涂抹易灼伤致敏Sources
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