Which of the following statements about skin composition is true?

• A. Skin is primarily made up of protein
• B. Skin contains various types of lipids
• C. Skin has no significant mineral content
• D. Skin is entirely composed of water

Answer: (B)

Skin is composed of a variety of components, and one crucial aspect of its composition is the presence of various types of lipids. Lipids are essential for maintaining the skin's barrier function and preventing transepidermal water loss, which contributes to hydration and overall skin health. They also play a role in the skin's structural integrity and flexibility.

In addition to lipids, the skin also contains proteins, such as collagen and elastin, which are vital for providing strength and elasticity. While skin does contain water, it is not entirely composed of it, and mineral content, such as trace elements, is present as well. Thus, the statement about skin containing various types of lipids accurately reflects an important feature of skin composition, underscoring the role of lipids in maintaining skin health and integrity.