Be careful when applying essential oils directly on to the skin. Although it may appear momentarily beneficial, it can burn, irritate or dry your skin. In my experience, applying tea tree oil directly to the skin constantly resulted in dermatitis on my face.

My skin would easily dry out and i had to stop using this oil to treat my acne. Ideally you don't want to apply essential oils directly on the face even if it is a drop - use any carrier oil to be safe.