Getting Comfortable in Your Own Skin and Its Many Layers

The skin is made up of multiple layers, called epithelial tissue. Underneath these epithelial tissues is muscles and other organs. The largest of your body’s organs, an average adult’s skin has a surface area of up to 21 square feet (6.4 square meters) and a thickness that ranges from 0.01 inches (0.2 mm) on the eyelid to 0.24 inches (6 mm) the sole of the foot. Just as the thickness of skin varies, so does its appearance. Skin pigmentation varies among populations and across ages, as does its texture, moisture content, and firmness. Before we dive into how diet can help our skin radiate beauty, let’s take a closer look at the skin’s structure and functions.

Layer One: The Epidermis

The top layer of your skin, the epidermis, is made of keratinocytes (discussed below), melanocytes (cells that provide color to the skin), and Langerhans cells (immune cells capable of identifying specific antigens and preventing disease). The epidermis is divided into five layers: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum (basal).

The outermost layer of your skin, or the stratum corneum, actually consists of dead cells. These cells are flat and composed mainly of keratin, a rigid material that allows the epidermis to perform its primary function: protecting and shielding us from injury and the environment.

Layer Two: The Dermis

The second layer of your skin is called the dermis. It consists of connective tissue and cushions the body from stress and strain. Your ability to sense heat and touch stems from the nerve endings in this area of the skin. The dermis also hosts:

  • glands (including sweat, apocrine, and sebaceous), which help keep the skin moist; when they are not functioning properly, however, oily skin can result, and acne can develop.

fibroblasts, produce the compounds that make the skin appear smooth and plump, such as collagen and elastin; fibroblasts can be supported by nutrients in food so they continue to give your skin a youthful appearance.

  • blood vessels, which ensure that your skin is radiant by delivering oxygen and other nutrients to it they also remove waste, including harmful chemicals that skin cells are trying to eliminate.
  • hair follicles, which are attached to the sebaceous gland.

Layer Three: The Hypodermis

The hypodermis is the innermost layer of the skin and is mostly used to store fat. It also contains fibroblasts, adipose cells (for fat storage), and macrophages, which are immune cells. Macrophages help keep your skin free from infection. Although they can produce inflammation that leads to puffiness, acne, or psoriasis, nutrients can help them work properly and reduce damage caused by the inflammation they stimulate.

As we age, the natural loss of fat stores in this layer of the skin can contribute to loose, sagging skin. Nutrients can reduce the visual effects of the hypodermis’s loss of fat stores by keeping fibroblasts healthy.

Wrinkle Preventers

There are three key elements in the skin that play a role in preventing wrinkles keratin, collagen, and elastin. Though we’ve mentioned them above, let’s examine each of these proteins separately to understand precisely how they work in our bodies, and how we can rely on them to promote healthy skin.

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