Inspired by the "definition of protective style" thread, I'm curious to see what people mean when they say "deep conditioning". Is it just any conditioner left on for a long period of time? Any conditioner + heat? Or conditioner + your favorite goodies like honey, yogurt, etc. A special conditioner that specifically says for "deep conditioning" (and if you choose this option, can you please let me know exactly what ingredients make something a deep conditioner)?