Koo Hye-sun Patents Self-Developed Hair Rolls and Storm Diets 'Multipurpose'
Nov 06, 2025
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On the 6th, Koo Hye-sun posted on her SNS page, "Transparent eyes." He released a number of photos with the words, "'Because the sunshine is good.'" In the picture, Koo Hye-sun is wearing a cream knit dress and wearing her own hair roll on her head. The unadorned natural style also drew attention with its unique innocence and lovely atmosphere.
In particular, Koo Hye-sun, who recently expressed her recent status as "On a Storm Diet," drew admiration from fans with her sleek jawline. The more transparent eyes and innocent visuals under natural light once again drew attention.
Koo Hye-sun is currently attending KAIST Graduate School and has actually obtained a patent with her research and development 'Flat Hair Roll' and is acting as a representative of venture companies. Hair rolls with a flat structure, not an existing prototype, are attracting attention as a practical product that can be rolled up when necessary and unfolded and stored when not.
In this regard, Koo Hye-sun appeared on MBC 'Radio Star' and wondered why it was always the same when she saw students wearing hair rolls around their hair. I wanted to spread it out not only when I used it, but when I didn't, I wanted it to be able to be worn around."
Meanwhile, Koo Hye-sun is continuing her new challenges recently as a graduate student at KAIST, CEO of a venture company, and actor in many fields.
mj.cho@sportschosun.com
