And what these cells do is they release a protein known as carotene. And carotene is responsible for making the skin impermeable to water. Now the other three types of cells found in the epidermis include the melanocytes. And these melanocytes are responsible for producing a skin pigment known as melanin, which basically gives the skin its color. The more melan we have in our skin, the darker our skin is. We also have cells known as Langerhon cells.