Final answer:
Aging affects the subcutaneous skin layer by causing sagging breasts, increased abdominal fat, wrinkling, cellulite formation, and double chin formation.
Step-by-step explanation:
Aging affects the subcutaneous skin layer in several ways. The reduction and redistribution of fat in the hypodermis leads to thinning and sagging of the skin, which can result in sagging breasts and a double chin formation. Additionally, the decreased production of collagen and elastin in the dermis contributes to the formation of wrinkles. Lastly, the breakdown of the skin's structure and the weakening of muscles under the skin can cause cellulite formation.