For this painting she used aquarelle, ink and acrylic. I think I also seem some bleach in there, the lighter color drips have that quality of what bleach looks like when it hits watercolors. I really dig this piece, I love how controlled the face is and those piercing eyes looking at you through all that chaos.
Kristina has a great style, and she knows when to get crazy with the paint and when to calm down.
Anyway, if you want to see more of her work head on over to her site:
Kristina Svartz Rydmark