If you are working on a large stain, start on the edges and work your way towards the center; this will keep the stain from spreading.
The chemical properties of baking soda make it an effective and affordable stain removing option. [3] X Research source
Meat tenderizer is a great option for removing old blood stains. Meat tenderizer breaks down proteins found in blood, making it an effective blood removing agent. [6] X Research source
Hydrogen peroxide, while highly effective at cleaning blood stains, should be used as a last resort. This substance has bleaching properties, and can weaken the fabric of your upholstery or, in some cases, discolor it. Test a small hidden area before using hydrogen peroxide. [8] X Research source
Ammonia is a strong cleaner and can break down the protein in blood that makes it so hard to remove. [9] X Research source It is important to dilute this cleaner before using it, and, as with any cleaning agent, it is best to test a small, hidden area first before using.
Soapy water can remove blood stains from leather, but the harsher the soap, the greater the chance you may do damage to your leather. Use a mild soap and test your cleaner on a small, out of sight spot to make sure your solution is right for your upholstery. [10] X Research source
Cream of tartar is most useful for removing deep-colored stains, like blood, from leather. [12] X Research source
