Is it safe to use a plastic-bodied salt grinder on every meal?
No. Grinder heads release microplastic with every turn.
What's actually in it
Disposable and refillable plastic salt and pepper grinders have a plastic body and a grinding mechanism that often includes plastic parts. Each time you turn the grinder, friction breaks off microscopic plastic particles that fall onto your food with the seasoning. Salt is used at most meals, which makes this a steady daily exposure.
Ceramic grinder heads reduce the problem on the grinding mechanism side. The plastic body still sheds.
What the research says
A 2026 study in Sci Total Environ specifically investigated microplastic release from plastic grinder heads during salt grinding. Every grinder tested released microplastics. Higher-friction grinders and older grinders released more. The particles ended up directly on the food being seasoned.
Swap in a stainless steel or glass grinder with a ceramic grinding mechanism (Peugeot, Kuhn Rikon, Cole and Mason glass versions). These cost $20-40 and last for years. For salt specifically, a simple pinch bowl with plain fingers or a stainless spoon works well. Pre-ground sea salt in a glass container is another low-plastic option. For pepper, a manual pepper mill in wood or stainless is a coffee-shop-quality upgrade without plastic.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Investigating microplastic release from plastic grinder heads during salt grinding. | Sci Total Environ | 2026 |
What to use instead
Browse our vetted, non-toxic alternatives. Every product is third-party certified.
Shop Non-Toxic Kitchen