Which brush do I use to apply MUF make up base?

I have make up forever's make up base in white and green. I apply the white one to my entire face so I use my fingers for that. However, I only use the green one to cover certain red spots on my face. If I don't use my fingers, is there any make up brush that you recommend? I saw in K'Jean's how to (the one about highlight and shading), she used a brush but I couldn't make out which one it is. Concealer brush? or any other suggestions?