Investigative dermatology is the branch of dermatology describing all aspects of cutaneous biology and skin disorder. It includes topics regarding organic chemistry, biophysics, carcinogenesis, cell regulation, development, skin structure, extracellular matrix, genetics, immunology, epidermal cell biology, biological science, molecular and cell biology, pathology, physiology, material medical, photobiology, transcutaneous absorption, clinical analysis, medical specialty and alternative population-based analysis.