Which protein primarily contributes to skin elasticity and flexibility?

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!

Elastin is the protein that gives skin its stretchability and ability to return to shape after being deformed. In the dermis, elastin fibers form a flexible network that allows the skin to stretch when needed and snap back, contributing to overall elasticity and suppleness. Collagen, on the other hand, provides structural strength and firmness, resisting stretch rather than enabling it. Keratin is a protective protein found mainly in the outer layers, contributing to rigidity in hair, nails, and the epidermis, not to elasticity. Desmosomes are cell-to-cell junctions that help skin cells stick together, not a protein responsible for reversible stretch. So, the primary contributor to elasticity and flexibility is elastin. As aging or sun exposure reduces elastin, skin loses some of its springiness.