What layer is at the base of the dermis and is composed of fatty adipose tissue?

The subcutaneous layer, also known as hypodermis, is the layer at the base of the dermis and is primarily composed of fatty adipose tissue. This layer serves several essential functions, including acting as an insulator to help regulate body temperature, providing cushioning and protection for underlying structures, and serving as an energy reserve.

Understanding this layer's role is crucial for various procedures related to electrolysis and laser treatments, as it influences how energy is absorbed and can impact the effectiveness and safety of these methods. While the epidermis is the outermost layer of skin and the dermis contains important connective tissue structures, the subcutaneous layer is specifically recognized for its adipose composition, which is critical for both cushioning and energy storage. The reticular layer is a deeper portion of the dermis, primarily made of dense connective tissue, and does not contain the same fatty composition as the subcutaneous layer.