There's a pattern in how synthetic chemicals in kitchenware get talked about. One gets enough attention to cause concern. A label appears promising it's been removed. Then a different one turns up in its place.

Understanding what's actually in your kitchen means understanding the pattern, not just the individual chemicals.

BPA

Bisphenol A is a chemical used to harden plastics and line food cans. It's been linked to hormonal disruption and has been phased out of many products following public pressure.

The problem is what replaced it. When manufacturers removed BPA, they substituted structurally similar chemicals — BPS, BPF, and others in the same bisphenol family. Research suggests these alternatives behave in similar ways in the body. The "BPA-free" label addressed the specific chemical. It didn't address the broader concern.

PFAS and PTFE

PFAS — per- and polyfluoroalkyl substances — are a class of thousands of synthetic chemicals used across a wide range of products. They're known as forever chemicals because they don't break down in the environment or in the human body.

PTFE, better known by the brand name Teflon, is a PFAS polymer used as a non-stick coating in cookware. It's been in widespread use since the 1940s.

Research has linked PFAS exposure to liver disease, thyroid disease, impaired immune response, and cancer. The International Agency for Research on Cancer classifies PFOA, one of the most studied PFAS chemicals, as possibly carcinogenic to humans.

A 2020 study by the Ecology Center tested 24 non-stick cooking and baking pans. 79% of the cooking pans were coated with PTFE. Packaging on some of those pans claimed they were PFOA-free, which was technically accurate. They still contained PTFE and other PFAS chemicals.

PFOA-free does not mean PFAS-free. The label answers a narrow question and leaves a wider one open.

The substitution problem

This is the pattern. A chemical draws enough scrutiny that manufacturers respond. They remove it and replace it with something less studied but structurally similar. The new chemical eventually draws scrutiny. A new label appears.

Regulation moves more slowly than chemistry. By the time a specific chemical is restricted, it may already have been replaced by something that hasn't been studied long enough to restrict yet.

The more reliable approach is to avoid synthetic coatings and plastic materials altogether rather than trying to track which specific chemicals are currently considered safe.

What that looks like in practice

Natural, uncoated materials don't require this calculation. Solid wood, cast iron, stainless steel - none of them involve synthetic coatings that can degrade, shed, or leach. There's nothing to replace with a lesser-studied alternative.

At Grain & Ridge, our standard is simple. Every product is made from natural, non-toxic materials and finished without synthetic coatings. Nothing that sheds, nothing that leaches, and nothing that gives bacteria anywhere to hide.

Shop the full range here.