To do this without injury to the color of the fabric, is sometimes easy, frequently most difficult and often impossible. Much may depend upon skillful and persevering manipulation; and although various agents are often-times valuable, yet good soap, after all, is the chief reliance.
Grease spots may generally be removed by the patient application of soap and soft water, but other means are also employed. Ox-gall is an excellent and delicate cleansing agent. It is a liquid soda soap. It removes grease and is said to fix and brighten colors, though it has a greenish tinge, which is bad for the purity of white articles.
Aqua ammonia is also good for removing grease spots from any fabric. Use the ammonia nearly pure and then lay light blotting paper over the spot and iron it lightly.