Free with purchase of liter size soap or 32 ounce lotion! Add any of our essential oils to your fragrance free lotion, soap or shampoo. It is easy to get the lotion you want with the essential oil you prefer. The essential oils are super certified pure and come with instructions for adding them to you lotions or soaps. 5ML. Choose your essential oil at check out. Choose between eucalyptus, grapefruit, lavender, lavender mint, peppermint, rosemary, tea tree oil or the special blend we use for the MSM cream.