What substance in the skin helps give it form and strength?

Collagen is a vital protein found in the skin that provides structure, form, and strength. It is the main component of connective tissues and plays a critical role in maintaining skin elasticity and firmness. As we age, collagen production decreases, leading to wrinkles and sagging skin, which is why many skincare products focus on stimulating collagen production for improved skin health.

Elastin, while also a protein found in the skin, primarily contributes to its elasticity rather than strength. Sebum is an oily substance produced by the sebaceous glands that helps to lubricate and protect the skin, but it doesn't provide structural support. Melanin is the pigment responsible for skin color and offers some protection against UV radiation, but it does not contribute to the skin's form or strength. Thus, collagen stands out as the key component that directly affects the structural integrity of the skin.