Stratum corneum

/stɹˈɑːtəm kɔːnˈiːəm/

/stɹˈɑːɾəm kɔːɹnˈiːəm/

[noun]

Stratum corneum

[NOUN]

the outermost layer of the skin consisting of dead cells forming a protective barrier

synonyms : corneum

horny layer

What is "stratum corneum"?

The stratum corneum, also known as the horny layer, is the outermost layer of the epidermis. It consists of flattened, dead skin cells called corneocytes that are tightly packed together. This layer acts as a protective barrier against external factors such as bacteria, moisture loss, and physical damage. The stratum corneum helps maintain the skin's hydration, prevents the entry of harmful substances, and contributes to the skin's overall strength and elasticity. It is continuously shed and replaced by new cells from the underlying layers.

Examples

1. Starting from the deepest layer and working out, there is the Stratum Basale, the Stratum Spinosum, the Stratum Granulosum, the Stratum Lucidum and the Stratum Corneum.

2. After approximately 5 days, this surge of cellular growth begins to slow down and a shiny new Stratum Corneum layer begins to show itself.