Charcoal is short for carbon pencil
Characteristics of charcoal:
1. The charcoal pen is a wooden pen with charcoal essence as its core. Its characteristics are that the pen color is thick, the adhesion is slightly poor, and the friction with the paper is large. It is not suitable for alteration. It is mostly used for sketching and portraits.
2. Charcoal sticks are mostly made from the twigs of willow trees. They are thick, thin, soft, and hard. They are used because of the different effects of the picture. You can start with the painting with a softer charcoal pen because it is easy to interact with. It can be erased and corrected repeatedly without damaging the drawing paper. Use harder charcoal to modify the details.