All the regular brands of non-ironing shirts will only say that they have the characteristics of "non-ironing" when promoting, but they don't say permanent non-ironing. According to the different effects of non-ironing process, the effect of "non-ironing" is also different. Generally, the non-ironing effect will weaken or disappear after washing for 5-20 times at most. If you have a high demand for dressing taste, it is still recommended to choose a high-end non-ironing shirt.

Perhaps the iron-free shirt has really solved the trouble that shirts need time-consuming care for a period of time, but along with this advantage, there are health problems. "Non-ironing" process is chemical finishing with resin finishing agent, which easily leads to excessive formaldehyde content, especially for non-brand non-ironing shirts.