Ku Hye-sun Turns Patented Hair Roller Into Retail Venture
Ku Hye-sun's patented foldable hair roller has completed trademark registration and entered duty-free retail.
Jang Hojin·
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Ku Hye-sun Lost 13kg With These Three Daily Habits
Korean actress Ku Hye-sun reveals how she lost 13 kilograms using only three sustainable habits — while also launching a sold-out eco-friendly product backed by a KAIST patent.
Park Chulwon·
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