Nickel free buttons are in growing demand from childrenswear, denim and lingerie brands, but the "nickel free" label doesn't always mean the same thing. Some suppliers use it for parts with no nickel at all; others use it for parts that simply pass the nickel release test. This article untangles the terms, explains how nickel-free plating works, what it costs and when you really should insist on it.
Why nickel is a problem
Nickel is the most common contact allergen in Europe. Between 8% and 19% of European adults are allergic to it, with a markedly higher share among women. Metal parts on clothing, such as the jeans waistband button, snap fasteners and zips, are a classic cause of contact dermatitis because they sit against the skin for hours, often with sweat and friction.
That is why the EU restricts not nickel content but nickel release: parts in direct and prolonged skin contact must not release more than 0.5 µg/cm² per week. Rivet buttons, rivets, zippers and metal marks on garments are named explicitly.
4-part snap fasteners AF-1 Col G050 – 15 mm Nickel Free
Classic snap fasteners SB 0003 Nickel Free – 4-piece set
Chicco SB 0002 Nickel-Free colorful snap fasteners – 4-piece setNickel-free, nickel-safe, nickel-compliant: the difference
| Term | What it means | Contains nickel? |
|---|---|---|
| Nickel-free | No intentionally added nickel in the plating and usually not in the base metal | No (traces aside) |
| Nickel-safe / compliant | Passes the EN 1811 release test below 0.5 µg/cm²/week | May contain it under a barrier layer |
| No claim | Standard plating, often with a nickel underlayer | Yes |
A nickel-safe part is perfectly legal, but its protection depends on the top layers and lacquer staying intact. Once the finish wears, as it can on a waistband button after months of wear, the nickel underlayer may reach the surface. A truly nickel-free part carries no such risk.
Tip: when a supplier says "nickel free", ask whether there is an EN 1811 test report and whether nickel is absent from the base metal too, not just from the top coat.
How nickel-free plating works
In conventional electroplating, nickel does an important job: it acts as a barrier and levelling layer so the final colour sits smoothly and doesn't diffuse into the base. To remove it, platers use alternative chemistries:
- White bronze (copper-tin-zinc) as a substitute intermediate layer.
- Copper and tin for antique and warm tones.
- Direct finishes on brass: brass itself contains no nickel, which makes it a preferred base.
- Organic coatings such as lacquer, soft-touch and enamel that isolate the metal.
On zinc alloy this is harder because the base needs reliable underlayers. That is why not every colour is available nickel-free, and some tones look slightly different from their standard versions.
What it costs, and why
Nickel-free plating usually costs more than standard plating. The reasons: pricier chemicals, a narrower process window, segregated lines to avoid contamination and additional testing. Per piece the difference is normally small next to the price of the garment, but on large runs it adds up. Pricing depends on the model and quantity, so request a quote for the specific item.
Look at the cost from the other side too: a return because of a rash, a negative review or a problem during a market surveillance check costs many times more than the price difference on the buttons. For babywear and jeans, nickel-free plating is insurance rather than a luxury.
When to insist on nickel-free
Strongly recommended
- Baby and childrenswear: bodysuits, rompers and pyjamas with snaps.
- Waistband buttons on jeans and trousers, sitting right on the skin below the navel.
- Lingerie, swimwear and activewear, where sweat and friction speed up release.
- Any collection sold with a "hypoallergenic" promise.
Advisable
- Shirts and dresses with metal buttons down the front.
- Belt and strap buckles.
Usually unnecessary
- Decorative buttons on coats and blazers that don't touch the skin.
- External metal details on bags and shoes.
Major denim brands have long followed a similar approach: for the European market they avoid nickel in jeans buttons and allow it only in parts with minimal skin contact.
A quick check: the dimethylglyoxime spot test
If you have doubts about a particular batch, there is a simple screening test. Pharmacies and specialist shops sell kits based on dimethylglyoxime (DMG). A drop of solution on a cotton bud is rubbed on the metal surface for about 30 seconds. If the bud turns pink, the metal is releasing a noticeable amount of nickel. The test is handy for goods-in checks and sample approval, but it doesn't replace laboratory testing to EN 1811: it gives no quantitative result and can miss release close to the limit. Good practice is to:
- test several buttons from every new batch;
- test the back and the shank as well as the face;
- repeat the test after the sample has been washed a few times, once the lacquer has worn.
What to request from your supplier
- A clear specification, "nickel-free" or "nickel-compliant", not just "no nickel issues".
- An EN 1811 test report (for coated parts, after EN 12472 wear simulation).
- A declaration of conformity with REACH Annex XVII.
- For childrenswear, pull-test results for the snaps.
FAQ
Is gunmetal nickel-free?
Not necessarily. Gunmetal is a colour, not a chemistry. It exists both with and without nickel, so check the spec.
Are brass buttons nickel-free?
Brass itself contains no nickel, but it is often nickel-plated. Unplated, or with a suitable alternative finish, yes.
Can a nickel-free button still cause a reaction?
Rarely, in people highly sensitive to other metals such as cobalt or chromium. For most people with a nickel allergy, though, it is the solution.
At Bul-tex you'll find snap fasteners, jeans buttons and buckles marked Nickel Free. Browse our snap fasteners, jeans buttons and eyelets. For production runs with a nickel-free requirement, contact us and we'll suggest suitable models.
