I was a little wary, because it can be hard to get a good gel pen that will actually flow onto the slick graphite surface, but these do.

They really show up on dark surfaces

Excellent coverage on dark surfaces

Very opaque white, good flow, fun to use over dark surfaces, or on top of watercolor for highlight

Works great on almost any dark surface for any purpose you can think of.

They are bright on every surface, flow pretty well on normal surfaces (though not on my painted up bumpy surfaces which is to be expected).

great for writing on dark surface.

I'm not too savvy on "white ink" pens, I'm more of a 1/2 a*s sketch doodle excuse artist

They were kept in the packaging they came in, as well as in a sealed box, where air couldn't have done this to them!

It smudges a

These pens really work as they're advertised to work

It acts as a great highlight to your art or a cute pen for any scrapbooking you have!A fair warning though, the set I received was more than generous with the amount of flow and it took a few tries for me to get it not to come out as fast as it did