All natural. We kettle cook in a cholesterol free peanut oil blend for a crunchier, tastier potato chip! Dirty Potato Chips are: cholesterol free; kosher certified. And Contain: no trans fats; no artificial colors; no artificial flavors; no msg; no preservatives; no wheat glutens; no artificial sweeteners. Dirty Potato Chips are kettle cooked one batch at a time and use premium all natural ingredients for a crunchier, tastier chip. We thank you for purchasing Dirty's. - John Shaw, Chip Master.