I don't even know how to decide what kind of preservative to try. How does one figure that out? I went to lotion crafters and looked at all the lotion preservative info they had. Obviously they have different kinds. Does it matter what kind you use in a lotion recipe? Do they act differently in a recipe with the ingredients? Are certain types better for use in GM recipes? Or are any preservatives pretty much the same? I haven't found any sites that explain these things yet. Does anybody know of a site that might explain how they work in a recipe? I found a cocoa butter lotion recipe at lotion crafter and I cut it way down, used the aloe juice Vicki recommended, put it in amber glass jars tand stored it in the fridge. I cut it down mainly so I can use it up in a week, so I don't have a lot hanging around. I cut the recipe down so I can make about 3/4 of a cup at a time. I've been trying out different oils and butters mainly to see how they feel on my skin. I understand that if I use GM I have to use sterile procedures, double pasteurize the milk, and use no more than 10 % in a recipe. Anything else?