A couple of tips if you do buy store bought dressings;
- Avoid "Low Fat" dressings! Low fat usually just means high sugar or as one of my favorite memes out there states, Low Fat = Chemical Shit Storm!
- Try to find dressing with fewer ingredients. Most salad dressings should contain a vinegar and an oil and maybe some seasonings. Avoid artificial colors, sweeteners, and flavors.
- Avoid veggie oils, canola and soyben are the big ones used in cheap dressings. These easily oxidize and will likely cause inflammation in your body. Not to mention most canola is genetically modified.