Yes. I do. And have done for years. Though it is not an exclusive dream journal. I write a diary/journal where I put dreams as well.
In it I write down all dreams. Anything I think is important through the day. I do it in my phone. So I often write down incidents, emotions, thoughts and so on as the day goes. Rather than just writing one session a day.
I also use a certain technique I came across by accident ten years ago. Rather than just writing down things in a normal day. I often just write and let myself be carried away by images, metaphors. Get into what I write the same way you do if you read a story. The idea here is to not think, analyze or be “aware” of what you do. That I do after writing. And this ion itself can be just as useful as dreams. Because when I manage to write in that state of mind unconscious processes come out. Like for instance. Let’s say I have been to town, drinking coffee, eating dinner and had a feeling of unrest, feeling that something is “off” and don’t know what. This type of meditative writing often gets out what it is. Like I write down parts of my day and a veil gets lifted.
Although I would come with a warning. This might trigger intense dreams, altered states and so on. And it might not be very pleasant work all the time. Not sure, but I think Jung used this method when doing The Red Book.