Spray paints are closed paint systems. This prevents the paint from drying out. Depending on the product and paint quality, we can guarantee a shelf life of up to 10 years. This also applies to cans that have already been used, which have not been sprayed empty and where the spray head has been sprayed free. However, practice has shown that most paint sprays still work perfectly 15 - 20 years after production! Of course, dry storage at 15° - 20° C is important.
With most sprays from European Aerosols, self-cleaning valves ensure empty spray heads. But if you want to be absolutely sure, simply turn the can upside down and squeeze the spray head for 2-3 seconds. In this way, only propellant gas is sprayed out and the valve is cleaned of active ingredient residues (paint residues).