It doesn’t matter how many years you’ve had your leather sofa – it may even be that the furniture is brand new, and its upholstery is already “decorated” with scratches and scuffs.
Instead of sending your interior items to a workshop for re-upholstery, try to deal with the problem yourself first.
For restoration you will need olive oil.
Soak a soft cloth in vegetable oil and rub it into the areas where defects were noticed using active circular movements.
Don't skimp on the oil - any remaining oily shine can be removed with paper towels.
By the way, oil will also help if scratches are found on wood products.
For example, to tidy up a wooden countertop worn by time and household members, you need to mix half a cup of olive oil and the same amount of vinegar.
Dip a sponge into the resulting mixture and apply it to the wooden surface.