A collection of baseball caps covered in crystals created from the sweat of their wearers was created by designer Alice Potts. For her INPerspire brand experiment, she asked eight people, from different backgrounds and lifestyles, to wear the baseball caps for six weeks as they went about their daily lives. “Sweat covers us in a similar way to clothes – like a second skin,” he stressed, speaking to Dezeen.

Those chosen for the experiment ranged from office workers to people in rave culture, people with a vegan lifestyle and people working in the sports sector. Crystallization began when the wearer’s sweat permeated the fibers of the hat. After six weeks, the caps were placed in a saline solution for a period of 10 hours to crystallize the sweat

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“The hats are already impregnated with each person’s sweat acting as a seed within the fibres, meaning that when placed in the solution it acts as a puzzle that evolves through the material. For every liter (of sweat) you can get 10-50 grams of saturated salt solution,” he explained.

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During the process, Potts noticed trends in the type of sweat crystals that formed, depending on the group’s individual and lifestyle factors. “A noticeable visual difference between men and women concerns the crystal structure of their sweat. “Women tend to show crystals with sharp points as opposed to men who show flatter points,” he pointed out.

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The INPerspire collection is on display at the Vancouver Art Gallery as part of the ‘Fashion Fictions’ exhibition, which ends on October 9.