Especially if skin sensitivity is a concern, definitely ALWAYS dilute your essential oil with a common neutral carrier oil (also called base oils) before application. Carrier oils are typically cold-pressed oils and do not evaporate like essential oils do, but they can go rancid where essential oils will not. Your choice of carrier oil will depend a bit on preference of smell, texture, and sensitivities to avoid allergic reactions. Popular choices for carrier oils are coconut oil, sweet almond oil, jojoba oil, avocado oil, sunflower oil or grape seed oil.
You can use essential oils in any number of ways. For example, add them to body lotions or carrier oils, and then apply them topically. Try enhancing a facial toner, shampoo, or conditioner with essential oils. Or incorporate them into liquid soap, toothpaste, or mouthwash. You can also diffuse or spritz the oils throughout a room or pour them into a bath.