Anything that contains a solvent will work for blending - I remember someone using some kind of laundry detergent too. Zest It is another product that works well, and smells better than some of the alternatives.
Dina Kowal Creative ♥ Original Art Prints
If you hear a voice within you say you cannot paint,
then by all means paint, and that voice will be silenced.
Vincent Van Gogh