middle dermis and hypodermis

The human skin has three parts that include the outer epidermis, middle dermis and hypodermis that acts as a communication channel between the two layers.
The epidermis is a complex brick wall that is made of keratinocytes, which produce a protein called keratin. It also contains melanocytes, pigment cells which produce melanin, Langerhans cells, presents antigens to the immune system, and Merkel cells, have a sensory function. For more details, https://vshospitals.com/specialties/dermatology/