How To Wash Linen Sheets Without Wrinkles. After that, simply soak the linen sheets in this solution overnight (or even for 48 hours). Ironing is the best way to get wrinkles out.
Remove sheets from the washer promptly, as soon as the cycle has completed. Remove linen items while they are still slightly damp to avoid setting in wrinkles and increasing the stiff feeling. Use a hot iron to press immediately after pulling out of the dryer;
Once the sheets are slightly damp to the touch take them out and hand press them on a flat surface, or put them right on the bed.
Grab a spray bottle, set it to mist and give the entire sheet a light spray, sides included. The tension combined with plain water is what helps to get the wrinkles out. Pour a cup of vinegar into 1 gallon of water and leave the linen sheets soaking into this solution overnight. Hang your bed sheets on a line so that they are laying flat and smooth.