The oil cleansing method, often abbreviated as OCM, is a system for cleaning the human body. It is sometimes used for treating acne. Sometimes, oils can be mixed; one example is 50% extra virgin olive oil and 50% castor oil. This mixture can be optimized based on skin type and personal preference. In accordance with skin type variations, castor oil may be too harsh in some skin-care regimens and is sometimes used in a 1:9 ratio. However, overly oily skin can make use of a larger proportion of castor oil. Other oils that are commonly used are jojoba oil, sweet almond oil, coconut oil, argan oil, , sunflower oil, Safflower oil, and grapeseed oil. Furthermore, some sources say that the oil cleansing method is not viable for sensitive skin. (en)