Melaleuca Alternifolia Leaf Oil

Melaleuca alternifolia leaf oil, commonly known as tea tree oil, is an essential oil steam-distilled from the leaves of the Australian tea tree plant. First Nations Australians used it traditionally for wounds, burns, and insect bites. In skincare, it functions primarily as an antioxidant and fragrance component.The oil contains several active compounds that contribute to its antimicrobial and anti-inflammatory properties, which form the basis of its historical use in skincare products.

Antioxidant. Hydrating. Good for Oily Skin

Tea tree oil's antimicrobial action works through multiple mechanisms involving its chemical components, which can disrupt microbial cell structures and reduce bacterial populations on the skin. Its anti-inflammatory activity operates through separate pathways that help downregulate inflammatory signalling.As an antioxidant, the oil helps neutralise free radicals that contribute to oxidative damage, though the relative potency of this action compared to other antioxidants is not well-established in skincare contexts.

Tea tree oil is often incorporated into products at low concentrations due to its potency. If using a product containing this ingredient, follow the manufacturer's guidance on application frequency. As an essential oil, it should not be applied undiluted to skin, and products containing it should be patch-tested first, particularly if you have sensitive or reactive skin.

Tea tree oil is generally well-tolerated in diluted cosmetic formulations. However, it may trigger irritation or exacerbate symptoms in individuals with eczema or other conditions characterised by a compromised skin barrier, so caution is advised for sensitive skin types.