Fast fashion is a disposable fashion. It is embodied by brands that have set up a system of ultra-fast renewal of their collections (more than 4 collections per year). Its beginnings only go back to the early 2000s. If it offers debatably low prices, in less than 25 years this way of thinking about fashion has had a disastrous record on environmental (from manufacturing to waste generated) and human (modern slavery, sanitary) points. Today, we even see the arrival of ultra-fast fashion brands on the market that have an even more devastating impact.