Always dilute essential oils in a carrier oil (like sweet almond oil or coconut oil) before applying to the skin. Banana peels contain specific enzymes and acids that some people think can help remove a mole. One potential benefit of using banana peel on the skin is that it will act as a moisturizer.
https://www.fingerlakes1.com/2022/02/03/skincell-advanced-reviews-effective-mole-skin-tag-removal/