Generally speaking, the skin is divided into epidermis and dermis, the thickness of which varies from 0.212 mm to 0.508 mm depending on the location, the eye is the most puffy, and the skin of the palm is the thickest.
The lower layer of the epidermis is the stratum corneum, which is composed of compact squamous cells. The stratum pellucidum, stratum granulosum, stratum spinosum and stratum germinatum are in descending order. The epidermis has no blood vessels, but there are many tiny nerve endings. The epidermis is basically translucent.