After many tests I chose the Color Box Frost White as the very best white stamp ink. It’s the most opaque without resorting to embossing. It also still allows for detail to show through, which I found key. It never left a perfect impression, but I don’t mind the handcrafted/rustic feel, if you want perfect I don’t think white stamp ink is there yet. The one thing I should mention is that ink reacts differently to each substrate (the item you are printing on) in this case cardstock. Some cardstock is more porous or has more texture, etc. so you need to test on your cardstock prior to getting started on your project. Practice is well, good practice in hand printing/stamping. There’s a learning curve and it’s silly to believe you are going to be great right out the gate, I know this from experience, I thought ‘how hard could it be?’ I am full of crafting bravado, I quickly learned that I needed some practice. It’s not hard per se but there is technique involved. So there you have it my favorite white stamp ink. My next hand printing/stamping tutorial will be on how to center a stamp so stay tuned!