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A hair washing machine

Inspired by designing for people with disabilities


I came up with this idea of making a hair washing machine to help my grandpa and other people who have hand/limb disabilities. They would be able to clean themselves easily and privately in the bathroom without any assistance. The Machine has 4-foot pedals which give users control of water, shampoo, conditioner, and head massage.

Roles: Research and Design

Year: 2016

Duration: 3 months


Have you injured your hand or limb?

How does it feel to be injured/disabled? 

How does it feel to interacting with someone with disabilities?

I interviewed 6 people who had experienced hand injury or hand disability.

Qingxian, My Grandpa

"Hand disability irritates me. I hope to be able to clean myself in the bathroom without the embarrassment of having someone next to me"

Yang Pei, Dancer

"Limb disability had definitely affected me physically and emotionally. But love from people around me motivates me keep pursuing my dream"

Jessica Rogers, Track Runner, UIUC

"People who has disability deserve a happy and 

independent life."

Secondary Research


Ziegler‐Graham K, MacKenzie EJ, Ephraim PL, Travison TG, Brookmeyer R. Estimating the Prevalence of Limb Loss in the United States: 2005 to 2050. Archives of Physical Medicine and Rehabilitation2008;89(3):422‐9.

HCUP Nationwide Inpatient Sample (NIS). Healthcare Cost and Utilization Project (HCUP). Rockville, MD: Agency for Healthcare Research and Quality; 2009.

Empathic Modeling

Experience what would it be like to live like someone who has hand/limb disabilities with our fingers and limb tided

Problem                     Solution

Story Boarding


Paper Prototype

Final Rendering

Application use: Solidwork

Copyright © 2020 by Grace Xiong