[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

持香时长与助眠需求存在权衡:入睡通常只需20-40分钟香气引导,选择持香2-4小时的产品即可,追求8小时长效往往意味着更高浓度香精或定香剂,反而增加刺激和过敏风险

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