Tea tree essential oil is highly concentrated, so it should always be diluted in a neutral base product before topical application. A common and safe starting ratio is 1-2 drops of tea tree oil per teaspoon (about 5 ml) of your chosen diluent. For the face, mix the drops into a fragrance-free moisturizer, face mask, or a small amount of a carrier oil like jojoba or squalane. For the scalp, add the drops directly into your palm with your regular shampoo amount, mix briefly, and then apply. The product's simple 100% composition gives you flexibility to adapt it to your routine. Always perform a patch test on a small area of skin (like your inner forearm) before wider use to check for sensitivity. Keep the oil away from the delicate eye area. If you experience any stinging, redness, or discomfort, discontinue use and rinse the area with water.