We recommend ironing for crisp folds but it is not necessary. If you don't have an iron, or dislike ironing like some of us do, hand pressing is an eco-friendly alternative. Make sure your hands and work surface are clean, remove mask from the dryer and press and flatten with your hands. Smooth out wrinkles with sweeping hands movements while pressing down firmly on the folds. Finally, fold the mask in to our signature shape for a crisp fold down the center.