it looks alot like vaseline.Same kind of texture as it as well. So what I did was throw some on the head as much as you think will cover what you want and let it dry some. It become stiffer and you can work it and mold it into what shape you want. As you noticed it gets really hard and will not come off.Once hardened...you can paint it. You can use paint brushes to apply it or tooth pick or whatever.
I got it at
www.squadron.com It's a 237 ml for $2.99 plus shipping. 1 Bottle is quite a bit but I got 2 so I will have a lot to practice with. Its called Acyric gloss Gel medium
You can make water, icicles as well it you don't like the hot glue method.