You can read every label in the supermarket, skip anything that sounds artificial, and still bring home ingredients made from sand, wood pulp and crushed insects. Some additives are so useful and so cheap that they sit in practically every aisle, from the salt shelf to the freezer case. Walk to your pantry right now and check a container of table salt or a bag of shredded cheese, and you will very likely find at least one entry from this list.
The timing makes this worth a closer look. The FDA is phasing out eight petroleum-based synthetic dyes by the end of 2026, and as manufacturers hunt for natural replacements, some of the strangest old-school ingredients, including one made from bugs, are getting more popular, not less. Here is what twelve of them actually are, where they hide, and why every one of them is legal.
Silicon Dioxide, the Sand Already in Your Salt Shaker
Open your cupboard and pick up the table salt. Somewhere on that label, often near the bottom, sits silicon dioxide, also listed as E551. It keeps salt, spice mixes, bouillon cubes, instant soups, instant coffee and protein powders pouring freely instead of clumping into bricks. If a powder in your kitchen flows smoothly on a humid day, this is usually the reason.
Silicon dioxide is purified silica, which is to say sand, the same mineral that makes up beaches and quartz. Food-grade versions are refined into a fine, food-safe powder, and regulators in the US and Europe allow it widely. It may be the single hardest additive to avoid, because it rides along in nearly every dry seasoning product in the store.