Ever sensitive to global trends, the fashion world has already embarked on moves aimed at creating a sustainable society. Techniques such as the use of fermentation in indigo dyeing have developed in harmony with nature since time immemorial. And today, advances are being made in the development of new textiles using cutting-edge microbiological technology, such as amino acid synthesis, genetic modification, and macromolecular polymers. As such, a vision for a future in which fashion does not impose a burden on the environment has emerged.