What it is
This ingredient is an extract of the leaves of Melaleuca alternifolia, the Australian tea tree, distinct from the more concentrated tea tree essential oil. In cosmetics the leaf extract is used as a skin-conditioning agent and contributes a mild characteristic scent. It is common in Korean sunscreens and care products positioned for blemish-prone or oily skin.
Safety & warnings
Tea tree materials contain terpene constituents, and oxidized tea tree oil in particular is a known contact allergen; the leaf extract is typically milder than the essential oil but may still cause irritation or sensitization in susceptible individuals. Those with reactive or sensitive skin should patch test. It is not regarded as comedogenic.
Origin & sourcing
Natural, extracted from the leaves of the Melaleuca alternifolia tree, which is native to Australia.
Questions everyone asks
Is tea tree leaf extract the same as tea tree oil?
No, the leaf extract is generally a milder, less concentrated preparation than tea tree essential oil, though both come from Melaleuca alternifolia.
Can tea tree extract irritate skin?
It contains terpene constituents and, especially when oxidized, can be a contact allergen, so sensitive individuals may experience irritation and should patch test.