Mica powder vs. Alcohol ink

What gives off the highest pigment using the smallest amount? I have both mica powder and alcohol ink. Mica powders I find great but you have to use quite a bit for good pigment and as much as I love glitter I haven’t seen any that don’t contain a shimmer. Alcohol ink is good but sometimes I don’t feel like my resin cures properly. I don’t use uv resin. Any tips on good colour?