Milady Standard Foundations 5 Practice Test

The main idea is recognizing the layer located beneath the skin’s surface. The hypodermis is the layer under the dermis, and its alternative name is the subcutaneous layer (subcutaneous tissue) because “subcutaneous” means beneath the skin. This layer is largely adipose tissue that cushions and insulates, and helps store energy.

To place it in context: the outermost layer is the epidermis, the middle layer is the dermis (which includes the papillary layer as a part of it), and the hypodermis is not part of the skin proper but lies beneath it, connecting the skin to underlying structures.