how do you clean a leather sofa ? its about 10 years old but still in good condition apart from being dirty, and there is a biro pen mark on a side panel
i have a cream leather sofa and i clean it with warm water and washing up liquid. Needs to be done often as stains can get ground in, such as dye from jeans. I have been told hair spray will remove biro from leather, but i have not tried it .Good luck