The properties of true lavender essential oil on hair.

The essential oil of true lavender offers various benefits for the scalp and is suitable for all hair types. Its main actions are summarized here.

• The essential oil of true lavender soothes the scalp.

  Scalp irritations and feelings of discomfort can be reduced thanks to the soothing properties of true lavender essential oil. Its sedative and calming actions complement these properties and ensure the well-being of the scalp. The linalool and linalyl acetate that make up this oil are indeed capable of inhibiting certain nociceptors, receptors responsible for the transmission of pain in the body. This reduces itching, which also limits scalp flaking and the formation of dandruff. Furthermore, the antimicrobial properties of true lavender essential oil allow it to fight against bacteria and fungi, thereby sanitizing the scalp.

• It acts against certain parasites.

  The presence of linalool and terpinen-4-ol in true lavender essential oil makes it an effective repellent against parasites of the scalp and hair, such as lice. Indeed, these molecules inhibit acetylcholinesterase, an enzyme found in these parasites that leads to the degradation of their acetylcholine neurotransmitter. This mechanism is the cause of the neurotoxicity of true lavender essential oil for lice. To combat these pests, apply a drop of pure essential oil or one diluted in a vegetable oil behind each ear and massage. This treatment can be done as a preventive or corrective action.

• This essential oil mitigates the effects of hair loss.

  Indeed, a study has shown that its use in synergy with essential oils of thyme linalool, rosemary, and Atlas cedar would help to mitigate thealopecia. A comparison of hair growth was conducted over 12 weeks between two groups of individuals suffering from alopecia: one applied the mixture of essential oils to the scalp, and the other used a placebo. The results highlighted a significantly greater hair growth in those using the essential oil mixture. However, the mechanism behind this hair regrowth has not yet been elucidated.

• It exhibits purifying properties.

  True lavender essential oil is perfectly suited for scalps prone to oiliness. The active ingredients in its composition (mainly linalool and linalyl acetate) give it an absorbent action, thus helping to limit the negative effects of hyperseborrhea. The scalp and hair appear less oily. A decrease in sebum levels has been particularly observed when using a combination of true lavender essential oils, tea tree and eucalyptus.

It is also suggested that true lavender essential oil may promote hair growth by stimulating microcirculation of the blood, but these properties remain controversial.

The essential oil of true lavender is suitable for all types of scalp and is very gentle. It is one of the most recognized in aromatherapy: it can be used pure and does not cause skin irritation. However, its use is not recommended for pregnant and breastfeeding women, and young children. To avoid any risk of overdose, it is advised for people with sensitive skin to dilute it in a vegetable oil.

It is also important to note that true lavender essential oil contains potentially allergenic biochemical compounds, such as geraniol, linalool, coumarin, and limonene. Therefore, it is recommended to conduct a tolerance test before incorporating it into a hair care regimen.

To test the true lavender essential oil, apply two drops in the crook of your elbow and wait at least 24 hours. If no adverse reaction is observed, it can be used on the scalp or skin.