Shosuke Ito, PhD, is an Emeritus Professor at Fujita Health University. He has been engaged in the chemistry of melanin and melanin-related metabolites since early 1970s. In 1985, he developed a methodology for analyzing two major types of melanin, eumelanin and pheomelanin, in melanin-containing tissue samples such as hair, skin, and cultured melanocytes. Applying this methodology, he has published more than 420 peer-reviewed articles including those from collaborative studies.