1 Apply Aloe vera gel or juice: Aloe vera gel or juice helps get rid of acne scars and makes your facial skin healthier. 2  There are many brands of aloe vera gel or juice available on the market today.
Jupiterimages/Photos.com/Getty Images. Limestones are a class of sedimentary rocks composed of the same mineral, calcite, which is made from calcium carbonate, or CaCO3. Despite this similarity in composition, however, not all limestone rocks are the same. Chalk is actually a special form of limestone that exhibits some differences from other rocks in the same class.
1 (February 12, 2003) What is the difference between oil pastel, soft pastel and colored school chalk? 2  Both oil pastel and soft pastel, in an artist quality brand, begin with ground color pigments. The ground pigments are combined with a slight amount of inert oil and wax to create an oil pastel; the ground pigments are combined with filler (often white chalk) and a slight amount of gum tragacanth to make a soft pastel.