The Malpighian layer, also known as the stratum basale or basal cell layer, is the innermost layer of the epidermis. This layer is responsible for producing new skin cells that continuously replace the older ones shed off from the surface. It is named after Marcello Malpighi, an Italian doctor and anatomist who was one of the first to study the structure and function of the skin. Some synonyms for the Malpighian layer include the basal layer, germinal layer, regenerative layer, and basal cell zone. These terms all refer to the same layer of skin that is constantly replenishing and renewing itself to keep our skin healthy and youthful-looking.