What is the inner layer of skin known as?

The inner layer of skin is known as the dermis. This layer is critical because it contains the structural components such as collagen and elastin fibers, which provide strength and elasticity to the skin. The dermis is also where you find blood vessels, nerve endings, hair follicles, and glands, including sweat and sebaceous glands. This inner layer plays a vital role in supporting and nourishing the outer layer of skin, known as the epidermis, and is essential for various skin functions, including sensation and thermoregulation. Understanding the anatomy of the skin layers is crucial for professionals in cosmetology and nail care, as it helps inform practices related to skin health and treatments.