This demo showcases the use of human hair for interactive textile sensing. It explores how a familiar biological material can be integrated into soft electronic systems to support more sustainable resource use while enabling sensorially engaging interactions with textile interfaces. The work is based on the principle of triboelectricity. Human hair is highly tribopositive and, when in contact with a tribonegative material, acquires a positive charge, typically experienced as static electricity and commonly known as hair frizz. While this phenomenon has been studied in other domains, its potential remains under-explored within electronic textiles and biodesign. Building on this, this demo explores the use of human hair as a material for interactive textiles. As a renewable, biodegradable resource typically discarded as waste, hair offers a promising alternative to metals and toxic materials commonly used in traditional electronic textiles. In addition, it emphasises hair’s sensorial properties and its potential for interaction, drawing on shared understandings of what hair is and how it is engaged with. The demo features an interactive textile-based object in the form of a pillow, along with textile samples. Participants are invited to touch, press, and stroke it. Through this interaction, the audience can explore how different gestures and pressure patterns influence electricity generation. The demo aims to introduce new materials and design possibilities for interactive textiles. This biodesign approach bridges technical experimentation with the intimate dimension of working with a human-grown biomaterial, proposing hair-based electronic textiles as a pathway towards potentially more meaningful and sustainable soft interfaces.