👉 The keratotic layer of skin is a thin, round cell layer that appears when the epidermis and dermis are damaged or irritated. Keratosis refers to this type of keratinous layer. It can be caused by various factors such as infection, trauma, or cancer. Keratosis usually presents as small, irregular patches on the surface of the skin that may appear white or brown in color. In some cases, keratosis is also called a "keratotic rash