[header] How to get butter out of clothing [title] Rub dishwashing soap into the stain. [step] Because dishwashing soaps are designed to deal with the fatty, greasy food products that build up on pots, pans, and plates, they're also a good way to deal with butter when it gets on clothing. [substeps] Dampen the stained area with lukewarm water. 
Apply a small amount of dishwashing soap to the stain. Rub at the stain gently with your fingers, making sure to spread the soap throughout the stained fabric.