Hydrogels are three-dimensional polymer networks of natural or synthetic origin, characterised by their extraordinary capacity to absorb water and different fluids, with the ability to retain a large amount of liquid in their structure without dissolving. Absorption capacity can depend on the conditions of the external medium (pH, temperature, ionic strength, electromagnetic radiation, etc.).
The incorporation of these materials into textiles makes them functional, giving them specific properties related with the spheres of medicine and hygiene. Hydrogel technology allows for the incorporation of substances with specific functions such as absorbing smells, providing anti-bacterial properties or reducing irritation.