The word "polyester" is reportedly Gen Z's new favourite insult, used to describe cheap-looking videos on TikTok and other users' taste. This figurative use coincides with a literal backlash against polyester, which is currently the most-produced synthetic fibre worldwide.
Young people are expressing concerns about the material's appearance, its feel on the skin, and potential health implications, although scientific research on the latter is still developing. Studies suggest that dyes, flame retardants, and sweat-wicking chemicals in synthetic fabrics may leach into sweaty skin, particularly in workout clothes.
The pushback also stems from environmental concerns, as polyester is derived from fossil fuels, does not biodegrade, and sheds microplastics when washed. Some influencers are promoting natural fibres with hashtags like #naturalfibers and #nontoxicclothing.
Additionally, some consumers feel that fashion brands are misrepresenting garments online, with items appearing good in pictures but feeling unpleasant in reality. A recent controversy involved a Gap Studio collection where items, assumed to be knitted, were instead 80% polyester and 20% elastane with a printed photograph of a knit.
While Shein's appeal may be waning, its ubiquity has made other fast fashion brands appear mid-market. Some Gen Z consumers are now vocal about expecting better quality than Shein when paying higher prices, often judging quality by checking for polyester content.