[surferjoe2007]

Pick a number of days, 60 for example. Measure out 60 days worth of lotion. Measure out 60 days worth of extract. Combine and stir. The product label may say how much you use a day or how many servings in a bottle. So you can also figure out how many days the bottle lasts, figure out how much lotion you need to last that many days, and pour the entire bottle into that much lotion. If the lotion doesn't say, you can figure out how much you use and put that in a measuring spoon. Then multiply that by the number of days you need. Then divide by 6 to convert teaspoons into ounces. And that's how many ounces of lotion you need.