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 JK-HairCoat products are permanent and restorative hair coating agents that make human hair silky (bone-straight), vivid, tangle-free, moist, soft, smooth, and glossy, with improved texture and shine. JK-HairCoat is developed by John (JK), combining over 25+ years of hair chemistry & coating technology in wig manufacturing. |
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Click the “P” button to view
the Purchasing Process for
the JK-HairCoat Product.
hair extensions, toupees, and other hair products, and are designed to retain their effects for months, even after dozens of washes.
| Dimensions of a 200 mL Bottle The two bottles shown beloware identical in size and specifications. |
Dimensions of a 1000 mL Bottle The two bottles shown beloware identical in size and specifications. |
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Click the “P” button to view the Purchasing Process for the JK-HairCoat Product. | FEATURES |
JK-HairCoat is formulated with high-grade cosmetic raw materials, engineered to be safe for both the environment and the human body. |
| STORAGE |
Store JK-HairCoat in a cool, shaded place (5–25°C), away from direct sunlight, following standard chemical storage practices. |
| SHELF LIFE |
Minimum shelf life of 2 years when stored under recommended conditions. |
| PACKAGE UNIT |
Mimimum Package Unit: 200 g. For shipping safety, bulk packaging is available in strong plastic containers of 0.5 kg, 1 kg, 2 kg, 5 kg, and 10 kg (10 liters). |
| APPLICATION |
Application instructions are simple. Please contact us for detailed guidance. |
wet, or healthy-looking appearance.
However, these wig oils are not permanent and are removed after one wash, or a few washes at most—similar to makeup being washed off the face.
Moreover, wig oils do not restore damaged hair.
In contrast, our Permanent John-HairCoat products provide long-lasting effects because they are ionically bonded to
human hair and synthetic fibers, forming a unified structure.
Within seconds after applying the HairCoat conditioner mixture by spraying, the permanent hair coating process is completed.
Immediately after application, the hair can be washed, shampooed, rinsed, permed, or otherwise processed.
RETENTIVENESS (DURABILITY) OF JOHN-HAIRCOATS
The hair coating effects—such as silky look, wet look, detangling, and damage protection—are retained for approximately
3 to 6 months, or even after dozens of washes.
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Q1. Does John's HairCoats obstruct color dye in dyeing human hair wefts ? | |
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A thin film (membrane layer) formed by HairCoat may slightly affect dye penetration. However, when dyeing is performed with water at a high temperature, HairCoat does not significantly interfere with the dyeing process. Hair dyes in salons can generally penetrate the HairCoat membrane without major difficulty. In addition, when the hair is washed with water—preferably hot water—the microscopic pores in the JK-HairCoat membrane temporarily expand, |
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Q2. After Iron-hair
straightening, will the effect last ? |
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Yes. The effects of JK-HairCoats remain after hair straightening with a flat iron. | |
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Q3. Does the JK-HairCoats damage the thread of wefts or affect hair color ? | |
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No. John’s JK-HairCoat causes no change to the strength or quality of the sewing thread, and it does not affect the color of the hair. | |
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Copyright© JohnKorea Co® · All Rights Reserved – Seoul, Korea | 
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Please get informed I have been with you while I have not texted you because you r questions and words had (?) me to think a lot and say a lot to you.
So, it took time for me to write into English.
Most toupee and wig factories worldwide, as well as most human hair processing and coloring factories, do not use JK-HairCoat.
The main reasons are historical and structural.
First, 40–50 years ago, in Korea (1970s) and later in China (since the 1990s),
technicians who processed and colored raw human hair used industrial silicone oils, simply because there were no alternatives available at that time.
Younger technicians have continued to follow the same methods, learning directly from senior technicians, and this practice largely remains unchanged today.
Even now, many factories in China, India, Indonesia, Vietnam, African countries, Russia, and other regions continue to condition hair using low-cost industrial silicone oils, following traditional methods.
In the past, industrial silicone oil was the only option.
Today, JK-HairCoat exists, but for large-scale wig and hair processing factories, especially in low-wage manufacturing countries, JK-HairCoat is considered too expensive for mass production.
Additionally, most factories are not even aware of the existence of JK-HairCoat.
However, the situation is completely different in the end-consumer market, not the manufacturing market.
In developed, high-wage countries such as the USA and Europe, the retail prices of human hair wigs and extensions are very high.
Considering the function and performance of JK-HairCoat, it is not expensive for end consumers or shop owners in these markets.
More importantly, JK-HairCoat creates an effect strong enough that customers are willing to return for re-conditioning every 1, 3, or 6 months, which is commercially very important.
With conventional industrial silicone oils, the coating effect—such as a silky look and silky touch—disappears after one or two washes.
In contrast, JK-HairCoat remains effective after dozens of washes, although durability varies depending on usage conditions such as wearing frequency, environment, and maintenance.
In hot or harsh environments, hair may dry out faster or the cuticle may become damaged.
In such cases, JK-HairCoat does not disappear by itself; rather, when the cuticle layer is lost, the coating attached to it is lost together.
Even so, this behavior is fundamentally different from industrial silicone oils, which lose their effect after just one or two washes.