The hair rollers personally developed by Ku Hye-sun have completed trademark registration and entered Duty Free Shops.
Actor Ku Hye-sun has achieved the milestone of completing trademark registration and entering duty-free shops with a Patented hair roller product that he personally developed. Ku Hye-sun announced this news directly on his social media, disclosing the relevant certificates and store entry details.
The product is characterized by enhanced portability that addresses the shortcomings of existing hair rollers; it was manufactured using Velcro material instead of a plastic body. Despite past controversies regarding its price, it continues to receive steady attention from consumers, causing a sell-out frenzy.
Koo Hyesun’s Patented Hair Roller Enters Duty-Free Market
Actress Koo Hyesun has officially expanded the reach of her self-developed hair roller by securing a spot in duty-free shops. The product, which features a patented design that minimizes plastic usage to improve portability, recently achieved this retail milestone following a successful trademark registration.
From Screen to Science
Known for her roles in iconic dramas like 'Boys Over Flowers' and 'Nonstop 5', Koo Hyesun has also pursued significant academic achievements. She recently completed her master’s degree in Science Journalism at the Korea Advanced Institute of Science and Technology (KAIST) as an early graduate.