"Subcutaneous tissue" refers to the layer of fat and connective tissue that is located just beneath our skin. It acts as a cushion, protecting our muscles and bones. Full definition
Moreover, as people age they store more white fat in the organs and bones and not only in subcutaneous tissue. (aktuelles.uni-frankfurt.de)
This organ is composed of three layers: the outermost layer (epidermis), second layer the dermis and the third layer is the deep subcutaneous tissue. (veterinarianelkinspark.com)
She rather looks like an old man, due to a red wrinkled skin with an insufficiently developed subcutaneous tissue. (bebezclub.com)