Crayola Crystal Effects Window Marker Set, 8-Colors

Very difficult to wash off

Great. It took a while for it to crystallize, but after I left it, it worked. The white one however, when I went to use it again, it looked like it exploded inside of its cap. I washed it out and later on it ended up happening again and I'm not sure why. But I still enjoy the product and the use I get out of it.

I got these last year for just a couple of my nieces; so this year I purchased for all the kids because they had so much writing on the mirror and sliding glass door. A little winded cleaned off!

These were great for my son and I to decorate my glass door. They look really cool and were really pretty. They only last a few days before melting and running down my windows though. So If you are going to use them make sure you clean them off the next day or you will have colorful streaks running down the window when it gets hot.

The colors could show up a bit brighter but the Crystal effects was very neat :)