It is highly unsaturated though, so it is prone to going rancid. Peanut oil is also regarded as a non-drying, conditioning oil, similar to olive and castor oils. Safflower oil is another unsaturated oil, so it should be used in combination with palm, coconut, or a similar oil. It is valuable for its moisturizing properties. Sesame oil is good as a superfatting agent because it is very good at moisturizing.
Some people find that it can be prone to rancidity but others have no problems.
It has a very strong scent which can overpower EOs, so plan your scents with that nutty sesame odor in mind. It makes a softish bar so use it in combination with other, more saturated oils. Shea butter is a truly superior superfatting agent because it contains a large percentage of elements which do not react with the lye, but instead remain in the soap to nourish your skin. Vegetable shortening is often made out of soybean oil. Its strong points are that it is cheap and readily available, is mild, and has a stable lather.