Limonene is a naturally occurring compound found mainly in the skin of certain plants and fruits, including lemons and oranges. It is used in cleaning products for two reasons: it has a pleasant, lemon-orange smell, and it acts as a solvent to help clean. SURFACE CLEANSER – with surfactant5% d-Limonene5% polysorbate 206% surfactant of choice, including coco betaine or Castille soap73.5% water0.5% to 1% preservative Mix the polysorbate 20 and d-Limonene together in a small container. In another container, mix the surfactants together – try not to get too much foam – then preservative and mix together again. Add the polysorbate 20 and d-Limonene, and package in a spray bottle. This won’t be too…