Modal is an artificial fibre obtained from the transformation of wood pulp (beech) into a reliable material by various chemical processes (sodium sulphate). It is manufactured in a closed circuit, i.e. the large quantities of water and chemicals used are recycled and reused until they are exhausted, and the water is treated before being discharged. Its CO2 footprint is neutral. For Modal to be environmentally friendly, care must be taken to ensure that the beech wood is sourced from PECF (Programme for the Endorsement of Forest Certification schemes) or FSC (Forest Stewardship Council) certified forests. It is an alternative to viscose* but TencelⓇ is a very similar material to modal but even more environmentally friendly as it is treated with a natural non-toxic solvent.
* banned material on KAP