Several ultra-fast-fashion e-commerce giants and high-volume mass retailers are frequently cited by labor and environmental watchdogs as among the least ethical due to opaque supply chains, extreme overproduction, and poverty wages. Brands such as Shein, Temu, Boohoo, Fashion Nova, and PrettyLittleThing draw intense criticism for utilizing disposable synthetic materials, generating vast amounts of textile waste, and failing to guarantee safe, living-wage conditions for the factory workers manufacturing their garments.