This pen is not good. It is TINY and it smears very easily. I've tried it on chalkboard, chalkboard labels (stickers), and chalkboard paint. Wasn't impressed with the way it worked on any surface, regardless of how long I let it dry. In addition, it is way overpriced. I bought it based on good reviews and the fact that I needed a very fine tip. You'll notice all the reviews are from people who were given the pen for free. If I got it for free, I might also think it was okay. As it stands now, I See full review