The All-Steel Pump. Not Just the Shell.
“Every "stainless steel" pump on the market is stainless steel on the outside. Plastic on the inside. Soap is a surfactant — it strips that plastic into particles you breathe. The pump that isn't contaminating your soap doesn't exist. Yet.”
The Problem
Soap is a surfactant. It strips molecules from surfaces — that's how it cleans. It does the same to the plastic it sits inside.
Every "stainless steel" pump has a polypropylene housing, plastic valves, and a plastic dip tube. Every press drives surfactant through the mechanism — friction between a steel spring and a polymer housing, stripping particles from every plastic surface the liquid touches.
Those particles don't just go down the drain. They scatter across the bathroom — sink, counter, hands, air. Microplastics become dust. Dust drifts through the house. Indoor air carries significantly higher microplastic concentrations than outdoor air. You inhale them. You ingest them from surfaces, from hands to mouth.
Once inside the body, the smallest particles cross the blood-brain barrier. Microplastics have been found in human blood, placental tissue, breast milk. Polypropylene — the material inside every pump — is the most frequently detected polymer in human blood samples. The body cannot clear them. They accumulate.
The "stainless steel" label hides the source. The plastic is inside, where the soap is. "100% plastic-free pumps do not exist at the moment."
The Gap
All-metal pump mechanisms already run industrial dispensers and medical equipment at millions of cycles. The engineering is proven. Nobody built it for a bathroom bottle because the cosmetic version — metal shell, plastic guts — was already selling. 75,000 pump components per brand, per year, sent to landfill.
What Should Exist
A pump where no plastic touches the liquid.
- All-steel construction — body, spring, dip tube, actuator, collar. No polymer in the liquid path.
- Natural rubber seals, plant-cured — Hevea brasiliensis rubber, cured without sulfur vulcanisation. Sulfur creates permanent crosslinks that make rubber non-compostable for decades. Plant-based curing (bio-based crosslinking) preserves biodegradability — home compostable when the seal reaches end of life.
- User-replaceable seals — the body lasts a decade+. The seal wears in 2-5 years. Replace a seal kit, not a pump.
- Standard fit — 28/400 and 28/410 neck sizes. Works with the bottles you already own.
The Honest Position
This is a premium product. Precision-engineered steel costs more than a plastic mechanism in a metal coat.
The seals are the hardest part. Plant-based curing that produces home-compostable rubber seals with the mechanical strength for a pump mechanism is at the frontier of materials science — lab-demonstrated, not yet commercial. This is the technical gap we're pushing manufacturers to close. The seals are 2-3 grams, replaced every few years.
If bar soap has already replaced the bottle for you, this isn't needed. The Forever Pump is for the bottle already on your shelf.
The Investigation: The Pump Problem — how every "metal" pump actually works, and why the genuine article hasn't been built yet.