Follow these steps to remove butter stains from leather or suede:
- Gently scrape to remove excess.
- Rub the stain with a thick paste of fullers earth and water.
- Let it dry and gently brush off the powder. Repeat if necessary, then, for leather only, apply products, such as Tannery Vintage Leather Cleaner & Conditioner or Fiebings Saddle Soap to condition the leather.