Soft keratins are a type of protein found in various tissues of the body, particularly in skin, hair, and nails. They are characterized by their flexible and pliable nature, which allows them to provide structural support while maintaining elasticity. Soft keratins are essential for the health and function of epithelial cells, contributing to the protective barrier of the skin. These proteins differ from hard keratins, which are more rigid and found in structures like hooves and feathers. Soft keratins play a crucial role in maintaining moisture and resilience in hair and skin, helping to prevent damage from environmental factors.