Hand wash the garment in cool water with a gentle detergent without stretching or wringing it.
Rinse the garment thoroughly and lay it flat on a clean, dry towel, reshaping it to its original dimensions.
Allow it to air dry away from direct heat or sunlight, and avoid hanging it to prevent stretching.
Once it is completely dry, store it folded neatly in a drawer or on a shelf, avoiding any surfaces that could snag the delicate fabric.