There are several natural products that benefit the skin. So, combining most of them should mean added advantage. Here is one such combination: add ½ cup extra virgin olive oil, 1 teaspoon tea tree oil, 1 teaspoon lavender oil, ⅓ cup aloe vera gel, ¼ cup vitamin E oil, ½ cup coconut oil (heated), 1 cup glycerin to 2 cups castile soap.