Q1: How does this varnish enable writing and erasing without damaging the surface?
A: It forms a dense, non-absorbent coating with controlled surface energy, allowing marker ink to sit on top without bonding or penetrating. Marks can be wiped clean with a dry cloth or eraser, leaving no residue and preserving the coating's integrity.

Q2: What types of markers are compatible, and how durable is the erasable effect?
A: It works best with dry-erase markers and most water-based markers. Avoid permanent or solvent-based inks, as they may stain. The erasability remains effective through repeated use but may gradually diminish under heavy abrasion or harsh cleaning agents.

Q3: Which applications benefit most from this reusable writable surface?
A: Ideal for educational tools (e.g., learning boards, activity sheets), reusable packaging (e.g., logistics labels, promotional boxes), retail signage, and interactive displays where temporary information needs to be updated frequently without replacing the substrate.