If you're like me this goes against the logic. But I've also always heard there needs to be a balance that does include fat. To be honest, my trials with fat-free eating yielded no results. In fact, I felt like an old and used dish rag when all the time.
Caution is the word to remember here. Good ole' fashion salad dressing we buy off the shelf has other dangers to be aware of, such as fillers that are not good anyone. See Harmful Food Additives in Salad Dressing