What does soft keratin primarily make up?

Soft keratin is a type of keratin that is flexible and pliable, primarily found in the epidermis, which is the outermost layer of skin. This protein contributes to the structure and resilience of the skin, allowing it to provide a protective barrier while also maintaining some level of elasticity and softness.

While options like hair and nails are primarily composed of hard keratin, soft keratin is specifically associated with the skin's layers. The dermis, located beneath the epidermis, contains collagen and elastin, which are not keratin. Therefore, the most accurate context in which soft keratin is primarily found is within the skin itself, making that the correct choice. Understanding the role of soft keratin helps recognize its importance in skin health and aesthetics, which is essential for those preparing for an esthetics license.