For the usual cleaning, dust with a soft and dry cloth.
In presence of stains, use a solution of distilled or boiled water with natural mild soapflakes of the highest quality (half cup of soapflakes in one litre of hot water).
Whisk the solution and use just the foam formed.
Apply the foam with a soft cloth, without soaking the leather, blotting the stains from the edges toward the centre, without rubbing, and wipe suddenly.
It’s recommended to make a test in a hidden part of the sofa, to be sure to don’t damage seriously more visible parts.
Never use solvent, steam, generic stain removers, or shoes cleaning products that would damage seriously the fixative with consequent degradation of the colour and the effect.
Never expose the furniture to the direct sunlight and place it faraway from any heat source as the leather may fade or become dry.