Fine lingerie includes your most delicate lingerie and fabrics—things made of silk and items that are lacy. First, submerge items in a warm water bath mixed with a delicate wash. (Try: Soak wash or The Laundress Delicate Wash). Next, soak for up to 30 minutes. Rinse out until soapy water is gone and then dry flat on a drying rack. Remember: wash sets together to minimize different colors fading into each other.
According to The Laundress, fabric softener is only to be used on cotton and general laundering—not when washing dedicates. Additionally, hand washing lengthens the life of colored garments, so try to hand wash as much as possible.