Organization: University of Michigan
Co-worker: Saebom Kwon, Stephanie Afshar, Bridget Siniakov

Date: Aug, 2017 - Jan, 2018
※ 2018 CHI Student Design Competition


Team Leader
UX Researcher / Designer


User Interview,
User Persona,
Paper Prototyping,

Usability Test



South Korean women using the popular Lilian brand sanitary products manufactured by Klean Nara have been experiencing adverse health effects. Chemicals in these pads have caused symptoms including reduced menstrual flow, change in odor and viscosity of blood, and skin rashes. However, due to the taboo nature of discussing menstruation in South Korea, many women did not realize that this was a widespread problem linked to Lilian brand sanitary products for three years.



Lack of reliable information

“I searched information on the Internet...to figure out which one has less [toxic] components. It was a terrible experience."


Focus on seeing objective information and safety rating criteria

“I only trust the information from news articles because it is objective.”


Desire to share menstrual experiences related to product use

“I looked at the information about pain relievers from online communities. Since many users responded, I can believe the information more.”


Time-sensitivity of information

“People use cosmetics everyday but not sanitary products. Even though [my] menstrual experience is annoying...it passes soon anyway. People easily forget their feelings.”


User Interview

Our team performed 10 interviews (6 Korean, and 4 American).
We identified our primary stakeholders as women ages 18-40 who regularly purchase sanitary products.


Ideation & Brainstorming

We adopted IDEO’s brainstorming model for initial ideation meetings, scheduling 60-90 minute weekly sessions. We included all “blue sky” ideas and did not limit the number of ideas we could come up with. Our team refined our initial list to ~10
potential solutions ranging from wearable technologies to updates to existing products. We refined our list to one solution via participatory design - we narrowed our list to five solutions, designed storyboards, asked 5 participants which solutions they were most likely to adopt in their daily lives, and adopted the one which received the most votes.

Strategy of Engagement

We raise awareness of Rotten Cherries through QR codes in women's public restroom stalls where women change their sanitary products.


Paper Prototype

We drew three potential design of each page, and discussed which functions should be included.

User Test & Modification

User Interface


Paper and Poster

Click the image for a larger view

Click the image for a larger view