Cartilage.

Cartilage holding ears and nose. Cartilage to separate from the skin so that they do not have their own blood supply. All the necessary blood to them from the surrounding skin. Therefore, should work with the cartilage is extremely cautious. Basic rule - puncture should be performed very slowly. Otherwise, the cartilage can crack the glass or even split into several pieces, which can lead to difficult consequences for health. In addition, the rapid piercing the skin can be damaged and some parts of it may die, which is also facing troubles. That's why making punctures in the cartilage be slow as possible and not increase them more often than once every ten or twelve. If it is possible to puncture the cartilage is better not to, and lying about skin tissue, which will look very impressive.