Anxious? Bath. Tired? Bath. Can’t sleep? Bath. I think you get the idea. One well-known way to avoid irritating the skin with essential oils is to use a carrier oil, like coconut oil or jojoba oil. But is it the same for the bath? According to Dr. Snyder, it’s not quite as simple as diluting your essential oil. “You never want to simply drop essential oils into your bathwater by themselves or they will potentially irritate the skin. That said, you do not always need to use a carrier oil when adding essential oils to your bath. You can also use Epsom salts and Castile soap to protect your skin and disperse essential oils throughout the bathwater.” There are also certain essential oils you shouldn’t be adding to your bath even with a carrier oil.