Which skin layer is primarily affected through exfoliation?

The stratum corneum is the outermost layer of the epidermis and is primarily affected through exfoliation. This layer consists of dead skin cells that are continuously shedding and being replaced by new cells from the deeper layers of the epidermis. Exfoliation involves the removal of these dead cells, which helps to promote smoother skin texture, unclog pores, and improve overall skin appearance.

By targeting the stratum corneum during exfoliation, various methods such as physical scrubs or chemical exfoliants can stimulate the cell turnover process, leading to healthier skin. It is important to focus on this layer because it serves as the barrier that protects the underlying layers of skin; therefore, proper exfoliation can enhance the skin's ability to absorb products and hydrate effectively.

In contrast, other skin layers such as the dermis, which contains connective tissue, hair follicles, and glands, and the hypodermis, which consists mainly of fat and connective tissue, are not directly impacted by exfoliation. The epidermis itself encompasses the stratum corneum, but exfoliation specifically concentrates on the outermost layer to achieve its benefits. Thus, the stratum corneum is indeed the most relevant layer affected by exfoliation techniques.