What is the process of replacing dead skin cells?

Prepare for the VTCT Level 2 Facial and Skincare Test. Revise with flashcards and multiple choice questions, accompanied by insightful explanations. Ace your assessment with confidence!

Cell renewal is the process of replacing dead skin cells. New skin cells are produced in the epidermis, especially in the basal layer, as they divide. These fresh cells then move upward through the epidermal layers, undergoing keratinization as they go, until they become the hardened, dead cells in the outermost layer. Those dead cells are shed in a normal cycle called desquamation, continually renewing the surface. In a typical young adult, this turnover cycle takes about 28 days, and it can slow with age or skin conditions. Supporting this turnover with gentle exfoliation and good hydration helps maintain a healthy, refreshed complexion.

The other terms describe a part of skin or a feature rather than the renewal process: thickness variation refers to how thick the skin is, the basal membrane is the boundary between the epidermis and dermis, and epidermis blood supply concerns circulation to the skin, not how dead cells are replaced.