Actor Koo Hye-sun's hair roller product, which she developed herself, has been revealed, and online debate continues over the price.
Recently, Koo Hye-sun shared the official sales page L.I.N.C for the hair roller she participated in developing on her social media. The product is priced at 13,000 won for one and 25,000 won for a set of two.
However, because most ordinary hair rollers sold on the market are priced in the hundreds to the 1,000-won range, some netizens pointed out that the price is excessively expensive. In particular, some said the product's composition is excessive relative to the price, noting that it is comparable to the price of rechargeable hair rollers.
On the other hand, there are opinions that the price is perfectly reasonable considering the product's development process and technological capability. The hair roller is reported to have been completed with Koo Hye-sun directly involved in every step from product planning to design, NAMING., and branding.
After Koo Hye-sun was accepted into the master's program in engineering at KAIST graduate school of science journalism in 2024, she participated in product development with a research team. She is said to have drawn ideas from hair rollers that students wear and conceived a new form of the product.
Earlier, Koo Hye-sun appeared on MBC's Radio Star and revealed the background of the product's development. At the time, she said she graduated from Sungkyunkwan University after 13 years and that a patent application was one of the graduation requirements, and she noted that she filed a patent after getting the idea from seeing the hair rollers students wear.
The product "Curole" is characterized by reinterpreting the traditional round-shaped hair roller. It was manufactured with a wave-shaped mold structure rather than a metal plate and finished with silicone laminating, applying a high-functionality polymer composite material. This allows the hair roller to be unfolded straight or rolled back up, and its size can be freely adjusted to increase portability.
It also achieved a "self-restoring" function that returns to its original shape with a light snap motion without separate heat or electrical stimulation, enhancing its technical completeness. Thanks to this technology, the product was selected for an outstanding patent award and drew attention.
But the controversy over the price continues. Some netizens pointed out that paying more than 10,000 won for a single hair roller is burdensome, while others reacted that the price is appropriate if the product applies patented technology.
[Photo] Koo Hye-sun SNS
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