Ingredient dictionary

Melaleuca Alternifolia Leaf Oil

Also listed as: Tea Tree Oil

An essential oil steam-distilled from the leaves of the Australian tea tree. It is mainly used to add scent and to help cleanse and condition the skin or hair. It is on the label of 4 products in our library. Checked against our library November 6, 2026.

The catch: because it is an essential oil, it carries the same fragrance allergens as perfume, so sensitive skin may react, and 'fragrance-free' labels can still contain it.

Essential oils. Scented plant oils such as lavender, citrus peel, peppermint or tea tree.

What Melaleuca Alternifolia Leaf Oil does

Adds a fresh, herbal scent
Gives mild antimicrobial activity
Helps skin feel clean

Tea tree oil is an essential oil steam-distilled from the leaves and small twigs of Melaleuca alternifolia, a tree native to eastern Australia. The result is a clear to pale yellow liquid with a sharp, fresh, herbal smell.

Formulators use it for its fresh scent and its mild antimicrobial properties, which can help a product feel cleaner. It pairs well with other plant oils and scents, and in body washes it is often paired with mild cleansers. At higher levels it can feel drying on some skin, so it is usually balanced with moisturizing ingredients.

Good for

Suits people who enjoy a fresh, herbal scent in cleansers, and is less suited to those with fragrance sensitivity.

Frequently asked questions

Is tea tree oil safe for sensitive skin?

Tea tree oil is an essential oil, so it carries the same fragrance allergens as perfume. People with sensitive skin may want to patch test first. Ingredient lists run from highest to lowest amount, so its position gives a rough clue to how much is used.

Is tea tree oil the same as green tea?

They are unrelated, despite the similar name. Tea tree oil comes from a myrtle-family tree native to Australia, while green tea comes from the Camellia sinensis plant, so their scents and uses differ.