Posca Pens....believe the hype!!!
I've been seeing them on many of the art YouTube channels & other social media sites. I am blown away by the opacity. For those of you who don't know...they are an acrylic paint pen. They are pricey, but you get what you pay for in the quality. I had a small 12x12 canvas that I had started painting a long time ago...I had a base coat of brown in the center....that was all.
Not the greatest work of art, but I was just trying to test all the colors (29!!!)