How should I dilute tea tree essential oil for safe use on skin or scalp?

Tea tree essential oil is highly concentrated and is typically not used on its own. For safe application on skin or scalp, it should be diluted into a carrier, such as a vegetable oil or an existing cosmetic product like shampoo. A common dilution ratio for most adults is 1-2 drops of essential oil per teaspoon (approximately 5 ml) of carrier oil or unscented base product. This allows for a very small, controlled amount of the active aromatic compounds (terpenes) to be introduced.

To make a scalp blend, you can add 1-2 drops to a dollop of your regular shampoo. For a body or face oil, mix 1-2 drops into a teaspoon of a neutral base oil like jojoba, sweet almond, or fractionated coconut oil. Always perform a patch test with the diluted mixture on a small area of skin (like the inner forearm) before broader use, especially if you have sensitive skin. This helps ensure you do not have a reaction. Avoid applying the undiluted oil directly to larger skin areas, and do not use it near the eyes.