So what can you use that really cleans but scrubs naturally? The grains of both sugar and salt are natural exfoliates. Just add some herbs and oil and you’re ready to go. Since salt is more abrasive, it should be used when doing serious exfoliation such as feet or elbows. Sugar is best for sensitive skin or more fragile/dry skin such as lips or face. When adding to an oil, such as grapeseed or olive oil, sugar is a fantastic natural exfoliate. It's full of glycolic acid, which helps to naturally break down dead skin cells and decrease fine lines.