The Toothpaste That Shows Its Chemistry

The Problem

Four minutes a day, every day, for the rest of your life — on the lining of your mouth. Oral mucosa is thin, vascular, permeable; it is closer to your bloodstream than the skin on your hand. Whatever sits in the paste sits on that surface, twice a day, forever.

You switched away from the supermarket tube for a reason. The canker sores that came every few months — twenty per cent of UK adults get recurrent ones, and the surfactant the dentistry literature has named for thirty years still leads the panel of every mainstream tube. A child under six who shouldn't be swallowing fluoride. A crown or veneer your dentist told you to be careful with. The plastic.

You walked into the natural shelf and read for no SLS, plant-based, coconut-derived, hydroxyapatite, fluoride-free, recyclable tube. Six things the wrapper does not tell you, every brush, twice a day, for years. Which surfactant has replaced SLS, and whether the replacement was condensed through ethylene oxide. The abrasivity of the paste — the number, on the 0–250 scale, that says whether you are polishing your enamel or sanding it. Whether the hydroxyapatite is at five per cent or twenty, what crystal size, what evidence base. Whether the glycerin next to the surfactant is the co-factor the canker-sore literature named in 1994. What preservative is in there, at what pH it works, whether the tube's inner lining is the epoxy-phenolic that carries bisphenol into food. What fraction of UK councils accept the recyclable tube the wrapper promised.

The vocabulary on the back of the tube was written for chemists in 1973. It was never specified to be read by you.

The Gap

We looked. The chemistry exists — at scalp- and oral-pH-compatible surfactants without ethoxylation, at mineral abrasives at named particle size, at hydroxyapatite at known concentration, at aluminium tubes and glass jars and kraft pouches that the metal stream and the home compost will actually take. The chemistry sheet does not — not at any UK or EU brand, in any format, at the depth this product needs. The information lives at the formulator's bench. EU cosmetics law standardises the name on the wrapper and stops there. Nothing requires the rest. Nothing prohibits it either.

What Should Exist

A toothpaste whose brand publishes the chemistry the wrapper was never designed to carry — the consumer chooses the format, the brand declares everything underneath it.

• One chemistry standard, three formats — paste in an aluminium tube, tablets in a glass jar with a metal lid, powder in a kraft pouch or aluminium tin. Format is preference; chemistry is constant.
• Active named, dosed, and cited — fluoride form and ppm with the evidence base named, OR hydroxyapatite per cent and crystal size with the evidence base named, OR no active and labelled cleansing-only. We take no position on which active belongs in your mouth. We demand the brand take a position, in writing, with a citation.
• Surfactant chemistry, with the pathway — sarcosinate, glutamate, methyl cocoyl taurate, or none at all in the powder and tablet. Synthesis pathway, ethoxylation flag yes/no, origin plant or petroleum. No SLS, no SCI, no SCS, no betaine without the impurity ceiling published.
• Abrasivity declared, in numbers — mineral named, particle size in microns, RDA value on the 0–250 scale. Not "for sensitive teeth." A number, so the dentist with the crown chart can tell you which paste belongs in your mouth.
• Glycerin disclosed and the canker context named — humectant origin and percentage; the 1994 mucosa-dehydration link named in plain language so the recurrent-canker-sore consumer can finally test the hypothesis the dental journals have been carrying for thirty years.
• Sweetener, preservative, flavour, pH — xylitol or erythritol at concentration; preservative identity with effective pH range, or none and the format reason; flavour by botanical binomial, not natural flavour; final paste pH, because anything below 5.5 demineralises the enamel you are brushing it onto.
• A tube that actually recycles in your council — aluminium body, detachable single-material cap, lining stated and bisphenol migration testing published if epoxy-phenolic; or glass jar with metal cap; or home-compost-certified kraft pouch. UK kerbside-acceptance rate published, by council.
• A chemistry sheet linked from every product page — every axis above, on a permanent URL, updated each formulation change. Paper or aluminium wrapper. Made and packed in the UK or EU. Not gated. Not behind a signup.

The Honest Position

A fully-disclosed paste in an aluminium tube costs three to five times the supermarket tube. A tablet in a glass jar costs more again. A powder changes how brushing feels — for some, a relief; for some, a deal-breaker. SLS-free formulations foam less, because the foam was the marketing, not the cleaning. We are not promising a cheaper paste. We are demanding the document the formulator already has, on the outside of a product going onto the most absorbent two square inches of your body, every day, for the rest of your life.

The Investigation: The Coco Question — how the 1973 trade-association vocabulary on the back of the wrapper was never designed for you, and why fifty years of natural shelving has not been enough to fix it.