World's First*1! Kai Releases "NadezoriTM", a New Sensation Razor for Children, and Holds "Parent-Child Skin Care Study Session" with a Pediatric Dermatologist

Kai Corporation (Headquarters: Chiyoda-ku, Tokyo; President & CEO: Hiroaki Endo), a global cutlery manufacturer, held a "Parent-Child Skin Care Study Session" on June 29, 2026 (Mon) to commemorate the launch of "NadezoriTM", a new sensation razor that is safe and easy for children to use. Dr. Yuki Shiomi, a pediatric dermatologist, was invited to the event.

*1: Razor structure in which multiple blades are arranged facing each other along each side of a regular polygonal opening (Patent No. 7710557).

About the "Parent-Child Skin Care Study Session"

In recent years, while more families are showing interest in body hair care for children, many parents are struggling with how to care for their children's delicate skin while protecting it. In response to these concerns, Kai Corporation launched the new sensation razor "NadezoriTM" on May 11, 2026 (Mon), which is safe and easy for children to use.

At the event, Keiko Kurita from Kai Corporation's Marketing Division introduced the development background and features of "NadezoriTM". Dr. Shiomi, Deputy Director of Shonan Jinbei Dermatology Clinic, was invited as a special guest. She analyzed the results of a pre-event survey on "Concerns about Children's Skin Care" from the perspective of a pediatric dermatologist and spoke about appropriate body hair care to protect children's delicate skin.

"NadezoriTM" Launch Commemorative Parent-Child Skin Care Study Session Overview

- Date and Time: June 29, 2026 (Mon) 16:00-17:00 (Reception opens 15:30~)

- Venue: Vector Studio C (16F Akasaka Garden City, 4-15-1 Akasaka, Minato-ku)

- Speakers: Dr. Yuki Shiomi, Deputy Director of Shonan Jinbei Dermatology Clinic

Keiko Kurita, General Manager, First Brand & Product Strategy Department, Marketing Division, Kai Corporation

- Content: Introduction to "NadezoriTM"

Answers to "Concerns about Children's Skin Care"

"NadezoriTM" Usage Demonstration

Photo Session

Company Introduction / "NadezoriTM" Product Introduction

First, Keiko Kurita from Kai Corporation's Marketing Division introduced Kai Corporation's overview, as well as the product features and development background of "NadezoriTM". Kurita explained, "Nadezori was developed with the aim of being an item that even children using a razor for the first time can use easily. By moving it in a circular motion as if stroking the skin, it can care for unwanted hair on the arms and legs, making it a product that is easy to incorporate as a first step in body hair care."

She also stated, "We hope that when children feel 'concerned about hair,' it will serve as an opportunity to talk with their parents about changes in their skin and bodies, rather than worrying alone. We would also be happy if body hair care could become an opportunity for parents and children to face the child's feelings and skin condition, rather than just a time for hair removal." Furthermore, she shared her passion for the product, saying, "We want to deliver options that allow children to start comfortably without being overly afraid, by providing them with correct information and aligning with their feelings."

Talk Session Regarding "Concerns about Children's Skin Care"

Next, Dr. Yuki Shiomi, Deputy Director of Shonan Jinbei Dermatology Clinic, took the stage for a talk session. Regarding the timing to start body hair care, Dr. Shiomi advised, "Instead of making a uniform judgment based solely on age, it is important to first check how much the child themselves is concerned and whether their current skin condition is suitable for care. Instead of immediately denying it by saying 'it's too early,' asking 'What are you concerned about?' and 'Since when have you been concerned?' can make it easier for parents and children to talk."

Regarding redness, itching, or dryness, she pointed out, "It is important not to push it. Children's skin can be easily irritated, so deciding to 'let's skip it today' is also important skin care." She added, "Body hair care is not just about the moment of removal; preparing the skin before and after is also important. Dry skin is more susceptible to irritation, so it is safe to consider the entire process, including cleaning without rubbing and moisturizing after care."

Regarding the concern that "shaving makes hair thicker," she explained, "Shaving does not make the hair itself thicker." She further elaborated, "After shaving, the cut end of the hair becomes flat, so it may appear thicker or feel thicker when it starts to grow. It's better to think of it as a change in appearance rather than an actual increase in hair." Regarding medical hair removal, she concluded, "Children are still growing, so even if they undergo hair removal, hair may grow back later. It is important for parents and children to talk about what the child is concerned about and how much they are concerned."

"NadezoriTM" Usage Demonstration

Kurita demonstrated the unique grip shape that fits in the palm of the hand and explained, "It is important to use on dry skin, as wetting the skin can cause the hair to lie flat and make it difficult to shave." She introduced the unique shaving method of moving in large circular motions and appealed for a care method that reduces burden on the skin, saying, "You can shave hair with gentle pressure, as it is designed to shave without pressing hard against the skin."

Please note that this product is for arms and legs only, and should not be used on other areas.

Upon hearing this demonstration, Dr. Shiomi commented, "From a dermatologist's perspective, the most important thing when actually using a tool is not to put too much strain on the skin." She highly praised the usefulness of the product's "skin-friendly design."

"NadezoriTM" Exhibition Booth

At this event, an interactive exhibition booth was set up where parents and children could vote on their concerns and honest thoughts about "children's body hair care." Visitors to the booth participated in voting while discussing with their children their concerns about when to start body hair care, skin condition, and proper care methods.

The voting did not lean towards any particular opinion. Positive comments such as "I want to teach them right away because I struggled with it myself" were mixed with anxieties like "I'm worried about injuries" and "I'm unsure when to teach them," as well as hesitation such as "Maybe they don't need to shave yet." The results showed a uniform distribution of votes across all options. The results offered a glimpse into the diverse ways of thinking and real-life struggles that vary from family to family, and provided a valuable opportunity for the parents and children gathered at the booth to face each other's true feelings.

"NadezoriTM" Key Features

Product Name: NadezoriTM

Price: 1,100 yen (tax included)

Release Date: May 11, 2026 (Mon)

1 Safety

Two resin guards on the blade ensure that the blade does not easily come into contact with the skin*2. While the blade is less likely to touch the skin, the height of the contact surface between the blade and the guard against the skin is almost unchanged, allowing for effective hair removal. The resin guard is also "comb-shaped," making it a safe structure that is less likely to cause cuts even if it slips sideways.

*2: An unprecedented pentagonal shape + comb blade shape designed with safety in mind (Design Registration No. 1793973).

2 Ease of Use

It is easy to shave in any direction, allowing for hair removal with a stroking motion. With conventional T-shaped razors, "with-the-grain shaving" along the direction of hair growth was recommended for minimal skin damage. However, with Nadezori, you can shave in any direction without worrying about the direction of hair growth, without damaging the skin.

3 Anywhere

Conventional T-shaped razors require the use of shaving foam or well-lathered soap. However, Nadezori can be used without wetting the skin or applying anything, allowing for hair removal anytime, anywhere, whenever you notice it.

Speaker Profiles

Yuki Shiomi, Deputy Director, Shonan Jinbei Dermatology Clinic

Certified Dermatologist of the Japanese Dermatological Association.

After graduating from Saitama Medical University in 2012, she gained experience at university hospitals and local medical institutions. She currently serves as Deputy Director of Shonan Jinbei Dermatology Clinic in Fujisawa City, Kanagawa Prefecture. She has contributed columns to newspapers and magazines. She is the author of the picture book "It's Painful, It's Itchy, Coat Saver!" which promotes enjoyable application.

Kai Corporation

Founded in 1908 in Seki City, Gifu Prefecture, a renowned cutlery town. Kai develops and manufactures approximately 10,000 items, primarily cutlery closely related to daily life, including grooming tools such as razors and nail clippers, beauty tools, kitchen knives, confectionery tools, and surgical blades. It is a global cutlery manufacturer that handles the entire process from product planning and development to production, sales, and logistics.

Headquarters: 3-9-5 Iwamotocho, Chiyoda-ku, Tokyo

President & CEO: Hiroaki Endo

https://www.kai-group.com

Inquiries from readers regarding this matter

Kai Corporation Customer Service Center

3-9-5 Iwamotocho, Chiyoda-ku, Tokyo 101-8586

TEL: 0120-016-410 (Toll-free access / Hikari Wide)

https://www.kai-group.com