Either we have to deal with a lacquered table, a chest, a cupboard or even hardwood flooring, wood can be easily scratched and damaged. See how to fix scratched furniture.
If the scratches are superficial
If furniture or flooring are just slightly scratched and lines are not deep into wood fiber, a solution of olive oil and lemon juice well mixed will do wonders.
If the scratches are deep
If the wood has deteriorated in depth, you need something to fill the hole in the wood grain, and to standardize the color.
The best natural remedy is to rub the scratch with an almond or walnut core, or with a waxy pencil or eyeliner.
If the wood has a darker color, you can try to paint the problem area with black tea bags or with coffee grounds.
Shoe cream can be a solution to a nasty scratch on the varnished wood table inherited from grandmother, or for the living room shelf.