ガンダムマーカー リアルタッチ GM406 リアルタッチ グレー3

I was skeptical about getting realistic weathering effects, but the tip on this marker blends the gray into the panel lines so smoothly it looks like actual grime. It dries fast too, which is nice when you're working on multiple sections.

The water-based paint makes cleanup so easy, and the realistic gray shade perfectly mimics dirt and grime on my model kits. I just scribbled it on and smudged with my finger for an instant weathered look. Really happy with how natural the stains turned out.