What Is a Corozo Button? Material, Sizes and Buyer Pitfalls
Corozo — also sold as tagua or vegetable ivory — is a button made from the dried nut of a South American palm. It dyes like fibre, wears like shell, and is the default natural-material choice for eco-certified ranges. This page covers the material, the sizes it comes in, the trade names buyers use, and the ways it fails.
The material and the process
Corozo is the seed of the tagua palm (Phytelephas macrocarpa), which grows in Ecuador and Colombia. The nuts are collected from fallen pods, dried for months to years, then cut into blanks, turned on a lathe, drilled, dyed and polished. It is a natural material worked entirely by cutting — there is no mould anywhere in the process, so a new size means a new cutting die and a few days, not weeks.
The dried nut is dense and hard — close to shell on scratch resistance — which is why it takes a crisp edge on engraved and laser-marked faces. The natural colour is ivory-white; because the nut absorbs dye deeply, corozo is the natural button most often specified in garment-dyed and overdyed programmes, where the button must take the same bath as the garment.
Sizes: ligne range and common lines
Corozo buttons run 18L–36L as standard. Conversion: 1L = 0.635 mm (full table on the standards reference page).
| Ligne | Diameter | Typical use |
|---|---|---|
| 18L | 11.4 mm | Shirt plackets, lightweight knits |
| 20L | 12.7 mm | Shirts, blouses |
| 24L | 15.2 mm | Jacket fronts, coats |
| 28L | 17.8 mm | Coats, outerwear centres |
| 32L | 20.3 mm | Statement coat buttons |
| 36L | 22.9 mm | Duffle and toggle-adjacent styles |
Trade names: what buyers actually call it
US buyers say corozo or tagua nut; UK buyers say corozo. The words vegetable ivory and corozo nut appear on older spec sheets and still on cost sheets. Any of the four gets understood — but pick one and keep it consistent across BOM, tech pack and PO, or the trim card and the goods will get matched to two different line items.
Where it is used
Suits, coats and premium casualwear are the core; eco and DTC ranges specify corozo because the material story is genuinely plant-based and traceable to the nut, not a marketing label bolted onto plastic. Linen-and-cotton resortwear uses it for the same reason — a natural button on a natural cloth reads correctly, where a glossy plastic button reads cheap.
Buyer pitfalls: how corozo orders go wrong
Dye-lot drift. The nut absorbs dye deeply, which is a strength for garment-dyeing and a trap for repeats: a second dye lot can sit visibly off the first. Control it with a lab dip per colour and a Delta E limit against the approved sample, and keep the approved reference for the repeat — the same discipline cast-sheet resin needs.
Natural grain variation. No two blanks show the same grain. Buyers who expect resin-level uniformity write chargebacks that no factory can win. State on the spec sheet that grain varies between buttons — that sentence prevents the dispute.
Moisture and cracking. The nut is hygroscopic; improper drying or storage shows up as end-grain cracks after washing. The test is the wash test, not the sample card.
Over-claimed sustainability. The material story is real, but certificates must match the paperwork: say what documentation travels with the shipment before the claim goes into a brand's marketing copy.
Questions buyers ask about this button
What is a corozo button made of?
The dried nut of the tagua palm (Phytelephas macrocarpa), a South American species. The nut is cut into blanks, turned, drilled, dyed and polished — a pure cutting process with no mould, so new sizes need only a new cutting die.
Can corozo buttons be dyed to match a garment?
Yes — and more deeply than most natural buttons, because the nut absorbs dye through its thickness. That is why corozo is the standard natural button for garment-dyed programmes, where button and garment share the same dye bath.
Corozo or polyester for an eco range?
Corozo if the claim must be material-based: it is a plant nut, traceable and biodegradable, with grain that signals natural origin. Polyester can carry recycled content (GRS) but stays a plastic — the two answers different buyer questions, and both appear on eco trims cards.
Sizes and test numbers referenced here are collected on the standards reference page; the full type list lives on the buttons knowledge page.
Senfa manufactures this button in-house
MOQs, sampling and compliance documents are covered on the product page — the commercial side of the same button, with the lot-test data behind it.
- 01Shell (MOP) — Shell Button
- 02Horn — Horn Buttons
- 03Snap fasteners — Snap Fasteners (Press Studs)
- 04All 29 button types — the master list