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HEERA*CA

HEERA*CA

ヒイラカ
Vendor
芝住宅総合開発株式会社
We develop and sell functional miscellaneous goods that are "antibacterial, deodorizing, and mold-proof" with safe and natural chemical changes. With the power of nanodiamond catalysts, "the discomfort of life" is solved.
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T3180001108508

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About the brand

We develop and sell functional miscellaneous goods that are "antibacterial, deodorizing, and mold-proof" with safe and natural chemical changes. With the power of nanodiamond catalysts, "the discomfort of life" is solved.
1
We produce and sell antibacterial, deodorant, and antifungal products that utilize nanodiamond catalysts that are not affected by light, temperature, or humidity.
2
While maintaining the texture of the material, it is also possible to contribute to the above effects.

More about the Brand Owner

芝潔

SHIBA KIYOSHI

My encounter with nanodiamond catalyst was a countermeasure against pet odor in real estate. Impressed by the overwhelming effect and his passion for "manufacturing" that has been involved in the design and construction of building equipment, he decided to develop a product. Due to the recklessness of zero retail experience, "Odor Cake" and "Vajra Hiyaki Chair" were born that are not bound by preconceived notions. What I value are two things: "being able to contribute to environmental measures without difficulty" and "feeling excited when purchasing". As a result, the smell was patented, and repeat customers continued to come back because of its convenience and design. Although the initial cost is high, the Vajra cypress chair has been evaluated for its reduced maintenance burden and long-term cost performance, and has been adopted in all rooms of JW Marriott Nara. With the idea of "I was able to do it because I didn't know" as a weapon, we will continue to deliver valuable products.
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Why are we doing?
What are we doing?
Commitment to the product
Who are supporting us?

Why are we doing?

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The reason for launching HEERACA was the desire to bring "invisible comfort" closer and more easily. I wanted to relieve the trivial stress I feel in my daily life without difficulty with the power of technology.
　
That's when I came across "nanodiamond catalysts" that demonstrate excellent power in deodorizing and antibacterial. We are confident that this technology, which can maintain a comfortable space without being affected by light or temperature, will bring "invisible peace of mind" to busy daily life.
　
The brand name "HEERACA" is a combination of "HEERA", which refers to diamonds, and "CATALYST", which means catalyst. We will support a comfortable life so that the time spent with your loved ones can be filled with smiles.

What are we doing?

We plan and sell lifestyle goods with antibacterial, deodorant, and antifungal functions using nanodiamond catalysts. Our main products are "Odor Ikeshiro", which solves the odor of the refrigerator in a lively manner, and the "Kongo Hinoki Chair", a bath chair made of Hinoki that is resistant to mold even though it is located in a water area. The former is patented, and the latter has a 5-year mold warranty.

Commitment to the product

We handle products that use "catalytic reactions" of materials that are harmless to the human body.
We are particular about "being able to contribute to the environment without difficulty while helping the family budget".
　
We have prepared a wide variety of designs with a focus on the fun and excitement of buying. Put it in a place that is not where you usually put a sticker... That's also one of the pleasures.
This product can be used not only in the refrigerator, but also in the freezer and vegetable compartment.
　
Hinoki's bath chair is a confident product that comes with a 5-year mold warranty while maintaining the texture and aroma of "solid wood" even though it is used around water. It has been installed in the bathrooms of all guest rooms at JW Marriott Hotel Nara since its opening in 2020 until today (0 mold complaints and replacements / as of March 2026)
Our products

Who are supporting us?

"Odor Keshiru" is supported mainly by women in their 30s and 50s due to its practical yet cute appearance and affordable price. Due to its ease of use, it is also chosen as a simple souvenir or as a moving greeting. It is also recommended as a choice next to the cash register or as a choice addition to free shipping. It is characterized by many repeat customers.
　
Hinoki's bath chair is a solid product. It is also appreciated as a gift for elderly parents because it is not cool when sitting down, including those who like solid products, those who are particular about baths, and because it does not feel cool when sitting down.
Solid wood with a strong image of taking a lot of time, and bath chairs that are worried about mold... Despite this, we are proud of our ease of use, which does not require daily wiping. We often receive offers and voices of excitement from people in the inn industry.
　
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