Which of the following gives the skin form and strength?

• A. Collagen
• B. Elastin
• C. Keratin
• D. Melanin

Answer: (A)

Collagen is a vital protein in the body that provides structure and support to various tissues, including the skin. It is primarily responsible for giving the skin its form and strength, which is essential for maintaining skin integrity and elasticity. Collagen fibers create a dense network that helps maintain the skin’s firmness and resilience, keeping it looking youthful and preventing sagging.

Elastin, while also important for the skin's structure, primarily allows the skin to stretch and return to its original shape. Keratin is a fibrous protein that makes up hair and nails, contributing to their strength and protective qualities but not directly to the overall structure of the skin. Melanin is the pigment responsible for the color of the skin, hair, and eyes, playing no role in providing form or strength.

Understanding the role of collagen is crucial for nail technicians, as knowledge about skin structure can impact the way they provide services and care for clients' hands and nails.