Japanese hinoki root essential oil may support better sleep at home
Sleep problems are common in middle age, particularly among women in their 40s and 50s. In a new study published Sept. 1, 2026, in the Journal of Wood Science, researchers explored whether essential oils derived from Hinoki (Chamaecyparis obtusa), known as Japanese cypress, roots could help improve sleep quality. Participants reported fewer nighttime awakenings, improved morning feelings and…
A recent study published in the Journal of Wood Science has found that essential oils derived from Hinoki root may help improve sleep quality. The study, conducted on 12 Japanese women aged 35-60, explored whether Hinoki root essential oil could add value to underused Hinoki roots and whether it could improve sleep. The participants used Hinoki root essential oil for two weeks, followed by an unscented control for two weeks.
Results showed that repeated use of the Hinoki root essential oil was associated with fewer nighttime awakenings, improved morning feelings, and brain-wave patterns suggesting smoother sleep onset. Participants also rated the Hinoki aroma as more relaxing and comfortable than the control. This research suggests that Hinoki root essential oil may support sleep initiation, sleep continuity, and feeling refreshed in the morning, potentially leading to the development of Hinoki root-based aroma products for use in bedrooms or other home environments.
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