For use it is recommended:

1 - Sand the area where the scratch is a little (if it is superficial it is not necessary)
2 - Shake the spray vigorously before pouring the paint
3 - Spray at a minimum distance of 15cm from the surface to avoid drops and jets of paint
4 - Wait 10 hours for complete drying. For quick drying (2 min) blow with a dryer or hot air gun for a few seconds until we see that the tone of the paint lightens.
5 - Before storing the spray it is advisable to thumb the duct. To do this, turn over and spray a surface for a few seconds to expel the paint from the tube.