Textile Coating Warns of Dehydration

Design researcher Paulien Routs has developed SOAK, a sweat-sensitive textile coating that provides a warning of dehydration. It can be applied to sportswear and changes color while the wearer is working out. The different colors provide a visual cue, showing the composition of their sweat and the condition of their internal health.

The spectrum ranges from blue (which means the wearer is well-hydrated with a high amount of base fluids in their sweat), through shades of green (which shows the presence of both base and acid fluids).