As with all Functional Formularies products, we do not use any emulsifiers or preservatives. Therefore, sometimes with our keto peptide formula you will see oil separation due to the high fat content of this product. This is completely normal and do not be alarmed. Think of it like the organic peanut butter you buy at the grocery that has the oil on top that you have to mix back up when you get home. If you get a pouch that has separated, just reblend it in a blender for 30-45 seconds and it will be ready to use.