Outer layer of skin that acts as a barrier between the body and the environment. Stratum corneum, uppermost layer, is made up of corneocytes (flat, dead skin cells) forming skin's barrier. Basal layer, bottom layer, is where pigment is produced.
The middle layer of the skin housing nerves, glands, essential proteins, enzymes, and blood cells, making it the skin's "operations" center. Contains collagen and elastin which provide support and structure to skin.
Lies below the epidermis and dermis and comprised mainly of fat, blood vessels, and nerves. This layer acts as a cushion that also insulates the body.
Located at the root of the hair follicles, these glands produce oil. This oil, or sebum, lubricates and waterproofs the skin and hair. Sebaceous glands are present everywhere except the palms and soles of the feet.
Elastin is an essential protein that gives skin the ability to “bounce back” after stretching. The breakdown of elastin leads to sagging skin. Sun exposure and repeated facial expressions damage elastin.
An essential protein that lends support to skin and gives it structure. It is one of the "building blocks" of skin's foundation. The breakdown of collagen leads to fine lines and wrinkles. Sun exposure is the number-one cause of collagen damage.
Dermal Epidermal Junction
The DEJ connects the dermis and epidermis. The DEJ is home to a network of blood vessels that pass nutrients from the dermis to the epidermis. The DEJ thins with age, making the skin more prone to sagging.
A network of blood vessels is found in the dermis and subcutaneous layer. These vessels supply the skin with oxygen and nutrients. The blood vessels play a role in regulating body temperature.
This oil-Overviewike substance is produced by the sebaceous glands. Sebum helps waterproof the skin. Sebum forms a film on skin that keeps water in and irritants out.