Evidence supporting the use of: Lavender
For the health condition: Insect Repellant

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Lavender (Lavandula angustifolia) has a long-standing reputation as an insect repellent, supported both by traditional use and emerging scientific evidence. Historically, lavender has been used in folk medicine and household practices as a means to deter insects such as moths, mosquitoes, and flies. Sachets of dried lavender flowers have often been placed in closets and drawers to repel moths, and lavender oil has been used on the skin or in sprays.

Scientific studies have begun to validate these traditional uses. Components of lavender essential oil, particularly linalool and linalyl acetate, have demonstrated repellent properties against mosquitoes and other insects in laboratory settings. For example, research published in the Journal of Vector Ecology and Parasitology Research indicates that lavender oil, when applied topically or diffused, can provide moderate protection against mosquito bites, though usually for a shorter duration compared to synthetic repellents like DEET. Some field studies also suggest a reduction in mosquito landings and bites when lavender oil is used.

However, the efficacy can vary based on the concentration of the oil, the method of application, and the specific insect species. While lavender is generally regarded as safe for topical use in diluted forms, it may cause skin irritation in some individuals. Overall, the evidence supports the traditional use of lavender as an insect repellent, but it is generally considered less effective and shorter-acting than conventional chemical repellents.

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