19 Sep 2022

The demand for chrome-free, heavy metal free and glutardialdehyde (GDA) free leather is bigger than ever. Zeology, an innovative leather tanning agent based on zeolites, delivers just that.



To ensure that you are working with “the real thing” and not just any zeolite-based tanning agent. Zeology is the only zeolite-based tanning agent for optimal leather performance on any substrate with a low environmental impact and unmatched production consistency.

The uniqueness of Zeology

What makes Zeology unique, compared to both traditional tanning agents and other existing sustainable alternatives, is that it delivers both sustainability benefits and superior leather performance.

Zeo White, the Zeology-tanned leather intermediate, is unsurpassed in characteristics such as grain tightness, physical leather properties, lightfastness and heat resistance. In addition, its bright white colour enables white leather and lighter and brighter colours than were ever possible before.

Four reasons why Zeology ≠ zeolite

Leather performance

Zeolite as an unmodified raw material, sold by the kilogram, is not a suitable tanning agent. The only perceived advantage of these zeolite blends is the price per kilogram of the tanning agent. Conversely, Zeology, with a modified zeolite (patented), is developed for optimal leather performance on any substrate with low environmental impact and unmatched production consistency.


Zeology is the certified leather tanning agent that is proven free of hazardous chemicals and consists of circular chemistry. So far, Zeology is the only zeolite-based tanning agent with ZDHC MRSL Conformance (Level 3), C2C Certified Material Health Certificate at the Platinum level and a ToxFMD Screened Chemistry certification.

Proven results

Zeology-tanned leather is biodegradable and compostable and is already being used worldwide for the creation of leather items, from shoes to bags and car seats, and many more beautiful and responsibly crafted products. PUMA, Anya Hindmarch, Mart Visser, EMMA Safety Footwear and Italic are just a few brands that have created leather goods with Zeology leather.

Full support

With Zeology comes full technical support to help tanneries and brands integrate it into their processes, for maximised results. We are here to give you valuable insights on working with Zeology and how to achieve optimal results.

Nera also takes care of all supply and custody requirements. Zeology is developed to unburden leather manufacturers and brands. Are you in doubt? Nera will always provide professional technical support.

Compostable and biodegradable leather with Zeology

The main benefit of Zeology is for the environment: less pollution, less discharge of chemicals in waste and wastewater, no use of chromium or glutardialdehyde (GDA) and improved biodegradability of tanned material.

It also offers important advantages towards your customers’ demands; with Zeology leather you meet the demand for responsibly sourced materials and chrome-free leather. Furthermore, with Zeology leather, you have the opportunity to produce compostable and biodegradable leather when combined with suitable biodegradable wet-end and finishing materials.

Let’s create sustainable leather together

Zeology is the zeolite-based tanning agent that is truly sustainable and does not compromise on leather performance. If you share the urgency for sustainably manufactured leather, start using Zeology today. Are you ready to start working with Zeology?

Go to neratanning.com for more information and contact details.

About APLF

We bring leather, material and fashion businesses together: an opportunity to meet and greet face to face. We bring them from all parts of the world so that they can find fresh partners, discover new customers or suppliers and keep ahead of industry developments.


We organise a number of trade exhibitions which focus on fashion and lifestyle: sectors that are constantly in flux, so visitors and exhibitors alike need to be constantly aware both of the changes around them and those forecast for coming seasons.


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