Ingredients on a food label are listed from the most abundant to the least abundant.
So if you see some cereal boxes they have "sugar" listed first. That's because that is the most abundant...
Gluten is listed on food labels, but is is contained many ingredients. Careful reading of labels is required to identify gluten-containing ingredients.
Wheat, wheat products, artificial dyes and...
Ingredients are listed by amount. If the first ingredient listed on a bottle of hand lotion is water, the main ingredient is water. Likewise in food. If the first two ingredients of a preprepared...