Dermatology is the branch of medicine dealing with skin. A dermatologist is one who specializes in everything skin. They manage all diseases related to hair, skin, nails, and even cosmetic problems. The skin is the biggest and a very important organ, meaning it is very vital to make sure the skin is always in peak condition as it contributes to optimal health. Dermatologist are responsible for ensuring patients are doing everything to keep the skin healthy, that is what makes a dermatologist job so important.