I used a bar of Sunlight soap on a 100 year old christening gown. Wet the fabric in warm water. Wet bar of soap. Lay fabric on a towel and gently rub the soap into the stain. If you can lay it outside in the sun. Do not let it dry. You will have to do it a few times, just keep the fabric wet. My gown came out beautifully and was worn by my grand daughter. Be sure to rinse the fabric out well.