Non-Technical Answer You can remove it from the dryer with a non-iron shirt and wear it immediately (no ironing required).I prefer to hang my shirts, but in any case your shirt will look great without ironing. With a wrinkle-resistant shirt, you'll be able to remove it from the dryer, deliver a quick iron or steam, and leave. The shirt will look great and will keep the wrinkles well.
Technical Answer The difference between non-ferrous and wrinkle-resistant shirts for 100% cotton shirts is the surfaces they apply to the shirts. Fabric manufacturers measure wrinkle resistance with “DP Grade.. 3-3.5 DP means that the shirt is wrinkle-free. Anything in the 2-2.99 range will be wrinkle resistant. Woven and fabric weight also play a major role in wrinkle resistance. Twill weaves are more susceptible to wrinkles, while twill holds the wrinkles optimally. Generally, the lighter the weight of a fabric, the better it is able to withstand wrinkles because a fabric such as oxford is prone to wrinkling.
Is there a difference? In addition to appearance, there is no sensory difference to wrinkles with the non-iron shirt.