What should be applied before sealing the paint can backup?

• A. Silicone
• B. Bloxygen
• C. Wax
• D. Polyurethane

Answer: (B)

The idea is to keep air out of the can to prevent the paint from drying or oxidizing. After you open the can, you want to displace the oxygen with an inert gas that sits on top of the paint, then seal quickly. Bloxygen is specifically designed for this purpose—you spray a small amount into the can to blanket the surface, pushing air out before you close the lid. This helps preserve the paint longer and prevents skins from forming.

Silicone would contaminate the paint and the environment inside the can; wax would leave residue and isn’t suitable for paint storage; polyurethane would create a coating that doesn’t address keeping air away from the paint and could mix with or affect subsequent use.