Now don't get me wrong, soybean oil is not bad for your skin but it just doesn't stand out on your label as one of those great skin care oils like sweet almond oil or avocado oil does. Some people consider it to be a skin care neutral because it does not offer any benefits or detriments.
In general, eating Paleo means eating veggies, fruits, meats, fish, certain fats, nuts, and seeds. And it means removing grains (breads, pastas, rice, etc), beans, soy, dairy, certain vegetable oils, and refined sugar from your diet.
The Paleo diet is based on the idea that humans are healthiest when we eat like our Paleolithic ancestors probably would have. In theory, early humans would have had access only to meat and eggs, vegetables, fruit, nuts, and seeds. They would not have had grains, legumes, refined sugar, or processed food of any kind.