What is the name of the protective layer of skin?

The epidermis is the outermost layer of skin and serves as a vital protective barrier for the body. It is composed primarily of keratinocytes, which produce keratin, a tough protein that helps water-proof the skin and serves as a barrier against environmental damage, pathogens, and toxins. The epidermis also contains melanocytes, which produce melanin to protect against UV radiation, and immune cells that help defend against infections.

Understanding the role of the epidermis in maintaining skin integrity and health is crucial in fields such as dermatology and cosmetology, as it plays a foundational role in understanding skin conditions and the effectiveness of various treatments.