I dont plan on selling it, and only need a small batch so I dont really think I need a preservative? What I need is some type of scrub for my face and neck. My skin has gotten really rough in that area, don't really know why but its pretty much like I need to slough some dead skin in that area. I make soap, body butters, and candles.....havent tried scrubs before so basically something simple would be appreciated. Any advice/help would be appreciated since I have no idea LOL TIA