Hinoki Root Oil Shows Early Promise for Sleep in Midlife Women
In a small pilot study, 12 Japanese women aged 35 to 60 used essential oil from Hinoki roots at bedtime for two weeks in their own homes. Compared with an unscented control, the oil was linked to fewer nighttime awakenings, better morning recovery, and brain-wave changes suggesting a smoother shift into deeper sleep. The single-blind crossover trial combined wearable brain-wave and smartwatch measurements with daily questionnaires, and the results were published in the Journal of Wood Science.
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The trial enrolled 12 Japanese women aged 35–60 in a single-blind crossover. Each used Hinoki root oil for two weeks and an unscented control for two weeks. At bedtime, they put three drops in a paper
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