I'm not going to teach you an anatomy, but I will try to talk about most important part highly related with skin care. So, maybe you alreay know that the skin  is composed of three layers:                  1. The EPIDERMIS - surface layer ( thinest one, also known as cuticle or scarf skin, approx 0.5 mm )         2. The DERMIS - middle layer ( thickest one, also clled derma, corium, cutis or true skin )         3. The HYPODERMIS - ( deep layer also known as SUBCUTANEOUS, subdermis or subcutis )   The epidermis is the layer, which acts like a screen - it shows us the condition and health of the skin, covers and protects our body ( think about cover ).  The dermis it's actually the layer where all " activity " are. It's mostly composed of elastin and collagen, that gives skin flexibillity. The hypodermis is basically just fatty tissue with blood vesseles and nerves.