How to properly store paint cans after opening?

Sealing Treatment
1. Immediate Sealing: After use, immediately cover the can opening with plastic wrap and then tighten the lid to reduce air entry.

2. Enhanced Sealing: Add aluminum foil or apply wax to the outer layer for further moisture protection.

Environmental Control
3. Temperature and Humidity: Store in a cool, dry place. Recommended temperature: 5-25℃; humidity: 40-70%.

4. Avoid Extreme Environments: Keep away from direct sunlight, high temperatures (such as on a balcony), or humidity (such as in a basement).

Container and Placement
1. Choose a Suitable Container: Use original metal or plastic cans whenever possible, ensuring they are clean and uncontaminated.

2. Vertical Placement: Avoid inverting the can to prevent paint film damage and sedimentation.

Regular Inspection and Usage Order
1. Check Condition: Regularly observe for signs of deterioration such as sedimentation, layering, or unusual odors.

2. First-In, First-Out: Use in the order of opening to avoid waste due to expiration. Special requirements for different types of paint:

1. Water-based paint: Requires moisture protection; use as soon as possible after opening.

2. Oil-based paint: Keep away from fire sources and ensure good ventilation.

3. Metallic paint: Avoid contact with iron products to prevent chemical reactions.