The proportions will determine how heavy it is. The directions are to dissolve the borax in the water, then mix the oil and beeswax and heat it gently over the stove or microwave until it melts. Then pour the oil mixture into the water mixture, stirring constantly, or mix everything until smooth and creamy in the blender. Cool completely and it will thicken as it cools. That is from page 61 from my book, Natural Beauty at Home.
Sugar is good and it is gentle enough for the face and body.
Mix it with water or with your favorite cleanser. Massage that into your skin, then rinse off. Do this maybe once a week or a couple of times a week. Some good exfoliators for the face are ground sunflower seeds, oatmeal, and dried orange peels. For the body, use corn meal, a loofa sponge and salt.