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.
No. It is similar only in that it is in the form of a dry stick. Chalk is composed of calcium carbonate mixed with silt and clay. It is white or generally light in color and much harder than pastel. Some chalk may, however, be used together with pigment to create paler tints of pastel.