I've been toying with the idea of making salt and/or sugar scrubs for Christmas gifts, and would like to use only ingredients that most people would have on hand in the kitchen (I don't want to spend a lot of money).
However, I'm told sugar/salt scrubs normally only keep a week or so, and I'd like to extend the life of whatever I end up making. I'm looking for some sort of preservative I already have on hand, and the only suggestions that I can find are lemon juice and alcohol, but I can't seem to find anything terribly specific about it. My questions are:
What type of alcohol are they talking about? The type you put on cuts, or vodka or something like that?
How much lemon juice and/or alcohol should I put in?
How much longer will the scrub keep with these in the recipe?
Or if you happen to have a recipe for a scrub that will keep for at least a month using kitchen and household ingredients, please post that.