Intranasal application of essential oils such as lavender and fennel (Pinetonina™) significantly lowers cortisol levels and improves sleep quality.
Randomised Controlled Trial Cortisol Lavender Sleep
The study included 45 participants divided into three groups: one group received a saline nasal spray (Group 1 CTRL), the second group received a 30% concentration of Pinetonina™ in a buffered vehicle as an intranasal spray (Group 2 P30), and the third group received a 50% concentration of the same (Group 3 P50). The sprays were used once daily before bedtime for three months. The study measured salivary cortisol levels both at the beginning and end of the trial and assessed subjects' quality of sleep, anxiety levels, perceived stress, and overall quality of life using self-reported questionnaires.
The study found that the groups using the 30% and 50% Pinetonina™ solutions saw significant reductions in their cortisol levels after the three-month period. The subjects in the 50% Pinetonina™ group also reported a notable improvement in their quality of sleep. However, there were no significant differences among the groups' perceived stress levels and their overall quality of life. Nevertheless, the study concluded that nightly intranasal use of Pinetonina™ could effectively lower cortisol levels and enhance sleep quality.
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