About HeiQ

Founded in 2005, as a spin-off from the Swiss Federal Institute of Technology Zurich (ETH), and listed on the London Stock Market (LSE: HEIQ), HeiQ is a leader in textile innovation, creating some of the most effective, durable and high-performance textile technologies on the market today. HeiQ helps to improve the lives of billions of people thanks to its innovations in the field of textiles and materials, with products which are increasingly practical, comfortable and durable. Combining three areas of expertise – scientific research, specific materials manufacturing and the sale of medical and textile products -the company has developed more than 200 technologies in partnership with 300 major brands including Ahlstrom, Pharma Plus, Burberry, Burton, GAP, Itochu, Mammut, Patagonia, Speedo, Serta Simmons and Zara.

HeiQ, Viroblock and HeiQ Viroblock are registered trademarks of HeiQ Materials AG.

A certified safe and durable technology

All the ingredients used by HeiQ Viroblock technology are:


Of cosmetic quality and of biological origin

All HeiQ Viroblock ingredients are rigorously selected and listed in the International Nomenclature of Cosmetic Ingredients (INCI).
HeiQ Viroblock was certified 72% biological origin by Beta Analytics Laboratory.


The efficacy and safety profile of HeiQ Viroblock

HeiQ Viroblock has been rigorously tested. HeiQ Viroblock contains an infinite amount of the active ingredient, recycled silver, and cosmetic-quality liposome vesicle components.


Recyclable cosmetic ingredients

HeiQ Viroblock uses biologically-sourced and recycled ingredients exclusively. HeiQ Viroblock technology complies with EU REACH and US FIFRA standards, and is OEKOTEX®, ZDHC and bluesign® certified. Treated textile items comply with EU BPR and US EPA.



Textile items treated with HeiQ Viroblock comply with EU BPR (when sold in EU Member States).

Cutting-edge technology

The patented technology HeiQ Viroblock enables textiles and KARMAN ACTIV’ PROTECT masks to destroy germs and viruses continually, safely and permanently.

To create KARMAN ACTIV’ PROTECT®, KARMAN called on the HeiQ Viroblock textile technology developed by the Swiss start-up HeiQ, a company listed on the London Stock Exchange and a leader in textile innovation.

✦ This advanced textile technology destroys microbes, bacteria and viruses, thanks to an anti-microbial, anti-bacterial and anti-viral treatment applied to the mask fabric during the last step of production. 

✦ The active ingredient of this treatment applied to the outer layer of the mask is a biocide made from recycled silver salts and cosmetic-quality liposome vesicle technology, which is used as a booster to rapidly destroy enveloped viruses, including coronaviruses.

✦ The technology inhibits the growth and persistence of micro-organisms and disrupts the behaviour of bacteria, microbes and germs on the surface of the fabric. The most recent tests, carried out by independent third-party virology institutes on HeiQ Viroblock NPJ03, demonstrate 99.99% effectiveness in 30 minutes against the COVID-19 virus, SARS-CoV-2.

 ✦ The residual viral infection, tested under a modified ISO 20743 method (Sendai virus) shows an anti-viral effect in 2 to 5 minutes. It has also tested under ISO 18184 as a strong anti-viral and ISO 20743 as a strong anti-bacterial against enveloped viruses and bacteria respectively.

HeiQ, Viroblock and HeiQ Viroblock are registered trademarks of HeiQ Materials AG.

Certifications and safety 


Test institute



Anti-viral activity
(virus responsible for COVID-19)


99.68% reduction of COVID-19 virus SARS-CoV-2 in 5 minutes and 99.99% in 30 minutes
Under ISO 18184 standard tests

Anti-bacterial activity
Staphylococcus aureus
dentification of anti-bacterial activity of textile products)

N°AB-0583-T of 30/04/2021

99.99% reduction in bacteria tested
Under ISO 20743 standard tests

Anti-bacterial activity Kelbsiella pneumoniae
(bacteria responsible for nosocomial infections, pulmonary diseases and septicaemia)

N°AB-0583-T of 30/04/2021

99.99% reduction in bacteria tested

Under ISO 20743 standard tests
Effectiveness of bacterial filtration

Cinar Validasyon Certification
N°AB-1497-T of 23/10/2020

99,9% of 3 µm particles

EN14683:2019 + AC compliant: 2019 TYPE IIR

High breathability
(differential pressure)

Ekoteks certification  
N° AB-0583-T of 11/09/2020

Result 52.7 Pa/cm2 (Regulatory requirement:
< 60 Pa/cm2 )

EN14683:2019 + AC compliant: 2019 TYPE IIR Annexe C
Microbial cleanliness
Ekoteks certification  
N° AB-0583-T of 11/09/2020

Result 19 cfu/g
(Regulatory requirement:
<= 30 cfu/g)

Under ISO 11737-1 :2018
Splash resistance
Ekoteks certification  
N° AB-0583-T of 11/09/2020

Result 21.3 Pa/cm2 (Regulatory requirement: >= 16 kPa)

EN14683:2019 + AC compliant: 2019
OEKO-TEX independent label

Hohenstein certification
of 28/11/2020, report N° 19.0.01029

Absence of harmful substances for humans and/or the environment

Non irritant

Kocaeli University report
of 24/06/2020

No irritant detected
Under ISO 10993-10
(Biological evaluation of medical devices – Part 10: Tests for Irritation and Sensitization)
Non-toxic for cells

Oxigen report
of 05/06/2020

Non cytotoxic
Under ISO 10993-5
(Biological evaluation of medical devices – Part 5: Tests for in vitro cytotoxicity)