Can I use this oil directly on a blemish or should it always be mixed? — tea tree blackforest essential oil, 10 ml medicalfort

It is not recommended to apply this 100% tea tree essential oil directly onto the skin, even on a single blemish. Undiluted essential oils are potent and can cause significant irritation, dryness, or a chemical burn, especially on sensitive or compromised skin. For a more targeted approach on a specific area, the safe method is to dilute one drop in a half-teaspoon of a gentle carrier oil (like argan or rosehip oil) or mix it into a tiny dab of your usual moisturizer, then apply that blend. This allows the oil's properties to work while being buffered by the base. The product description notes it is chosen for blemish-prone areas, but emphasizes it should be added to creams, masks, or base oils. Always observe how your skin reacts and stop if any adverse effect occurs.