Apart from Italian-style dressings, nearly all supermarket salad dressings contain animal-derived ingredients. But don’t be discouraged; supermarket salad dressings are universally terrible. This is, after all, the same industry that brought the world ranch dressing.
So forget about the godawful dairy-based French dressing with the xantham gum and food coloring. There are plenty of vegan options that pack far more flavor, and are made from wholesome ingredients.
Here are some excellent commercial vegan salad dressings: