Drawing with white ink on a colored/pastel pencil artwork without the pen clogging up I am doing some work in pastel and colored pencils. I like to finish the fine white details with a white pen. At the moment, I'm working with a white gel pen.

However, either the ink (the gel) isn't flowing properly on the heavily burnished parts, or it clogs up when drawing on the dusty pastel layer. So, in short, drawing the final white details is a battle and takes a lot of time.

So I was wondering, does anybody here have a solution for adding the fine white details in such a drawing?
I'd suggest you use white acrylic ink with either a dip pen or a fine pointed brush (whatever suits you better).