Alternifolia (Tea Tree) Leaf Oil
Alternifolia (Tea Tree) Leaf Oil
Tea tree leaf oil is a volatile essential oil obtained from Melaleuca alternifolia leaves by steam distillation. It is used in cosmetics primarily for fragrance and for its antimicrobial, antiseptic, and acne-targeting properties. Its composition varies by source and age of the oil, with terpinen-4-ol commonly considered a major active component. Because it is a complex essential oil rather than a single defined molecule, standard molecular-weight and pH values are not applicable.
Benefits
Concerns
Chemical Properties
Skin Type Compatibility
Interactions
Risks & Warnings
Can cause skin irritation, stinging, and allergic contact dermatitis, especially at higher concentrations or when oxidized/aged. Must not be used undiluted on skin. Use caution around eyes, mucous membranes, and broken or inflamed skin. Oxidized tea tree oil is more likely to sensitize. Data for pregnancy and lactation safety are limited, so conservative use or avoidance is prudent.
