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FAQ

Frequently asked questions

We have compiled a list of frequently asked questions from customers. Please check here first before making an inquiry.

About the product

  • Can Stone Barrier knives be washed in the dishwasher?
    Please do not use a dishwasher as the wooden handle may crack. The Super Stone Barrier Knife Light Type can be used in a dishwasher.
  • Is there any adverse effect on the body if the fluorine on a Stone Barrier knife peels off?
    Yes, it is harmless. Even if you swallow it, it will be excreted from the body, so don't worry.
  • What does medium heat or lower mean when using the Muteki Barrier Frying Pan?
    Use the pot on a heat level where the flame is just about to touch the bottom of the pot. If the heat is too strong, the heat will circulate easily and cause the food to burn. Also, high heat will deteriorate the coating. Because the pot has good thermal conductivity, it can be used on low heat for cooking.
  • Is the Muteki Barrier Frying Pan PFOA-free? (PTFE-free?)
    It does not contain PFOA or PFOS, which are considered harmful to the environment and health, so you can use it with confidence.
  • Can the Muteki Barrier Frying Pan be used without oil?
    No. It may cause food to burn, so be sure to apply oil before use.
  • Can knife scissors be sharpened?
    No. Please refrain from sharpening the blade yourself as it will wear down the serrated edge.
  • Please tell me how to disassemble and assemble the butt scissors.
    [Disassembly] Open the blade fully and remove it. [Assembly] Assemble while pushing the joint part from the back. For details, please watch the video ⬇︎
  • Can I use bleach on scissors?
    No. Please refrain from using bleach.
  • For how long can I use Muteki Scissors?
    This will vary depending on how often you use it and the ingredients you cut.
  • 切れ味が悪くなることはありますか？
    ムテキバサミはセレーション（ギザ）加工がしてあるあり、かしめ部分にあるウェーブワッシャーというバネのようなものによって常に刃と刃が同じ角度になるように作られているため、うまく噛み合わさり長く使っていただけるハサミとなっています。
  • ムテキバサミが錆びた。包丁が錆びた
    ハサミや包丁は他のステンレス製品と違い、切れ味を出すために炭素を多く含んでいます。水分や食材の成分が残った状態で放置すると、錆びることがあります。 錆びてしまった際には、サビ消しゴムやクレンザーで落としてください。
  • Is it better to remove the insole that is originally in the shoe or to put the Muteki insole on top of it?
    If your shoes fit perfectly, remove the original insoles, but if they are not tight, place them on top of the original insoles.
  • Can Muteki insoles be washed with water?
    The sponge part is weak against water, so it cannot be washed with water. If you are concerned about dirt, brush it and dry it in the shade.
  • I can't tell the front from the back of the Muteki insole.
    The surface (the side that touches your feet) is fabric, and the back (the side that touches your shoes) is Muteki gel.
  • The body of the G Zero Pillow Neo has started to turn yellow.
    Urethane foam is a material that turns yellow over time.
  • Can I use the Loop Ocean Towel every day?
    Yes, you can. Simply lather up some body wash or soap and rub gently onto the skin.
  • Does Loop Ocean Facial Cleansing Puff use soap?
    Yes. It is more effective if you use it with your regular cleansing product, face wash or soap.

About KYOWA STUDIO

  • Can Stone Barrier knives be washed in the dishwasher?
    Please do not use a dishwasher as the wooden handle may crack. The Super Stone Barrier Knife Light Type can be used in a dishwasher.
  • Is there any adverse effect on the body if the fluorine on a Stone Barrier knife peels off?
    Yes, it is harmless. Even if you swallow it, it will be excreted from the body, so don't worry.
  • What does medium heat or lower mean when using the Muteki Barrier Frying Pan?
    Use the pot on a heat level where the flame is just about to touch the bottom of the pot. If the heat is too strong, the heat will circulate easily and cause the food to burn. Also, high heat will deteriorate the coating. Because the pot has good thermal conductivity, it can be used on low heat for cooking.
  • Is the Muteki Barrier Frying Pan PFOA-free? (PTFE-free?)
    It does not contain PFOA or PFOS, which are considered harmful to the environment and health, so you can use it with confidence.
  • Can the Muteki Barrier Frying Pan be used without oil?
    No. It may cause food to burn, so be sure to apply oil before use.
  • Can knife scissors be sharpened?
    No. Please refrain from sharpening the blade yourself as it will wear down the serrated edge.
  • Please tell me how to disassemble and assemble the butt scissors.
    [Disassembly] Open the blade fully and remove it. [Assembly] Assemble while pushing the joint part from the back. For details, please watch the video ⬇︎
  • Can I use bleach on scissors?
    No. Please refrain from using bleach.
  • For how long can I use Muteki Scissors?
    This will vary depending on how often you use it and the ingredients you cut.
  • 切れ味が悪くなることはありますか？
    ムテキバサミはセレーション（ギザ）加工がしてあるあり、かしめ部分にあるウェーブワッシャーというバネのようなものによって常に刃と刃が同じ角度になるように作られているため、うまく噛み合わさり長く使っていただけるハサミとなっています。
  • ムテキバサミが錆びた。包丁が錆びた
    ハサミや包丁は他のステンレス製品と違い、切れ味を出すために炭素を多く含んでいます。水分や食材の成分が残った状態で放置すると、錆びることがあります。 錆びてしまった際には、サビ消しゴムやクレンザーで落としてください。
  • Is it better to remove the insole that is originally in the shoe or to put the Muteki insole on top of it?
    If your shoes fit perfectly, remove the original insoles, but if they are not tight, place them on top of the original insoles.
  • Can Muteki insoles be washed with water?
    The sponge part is weak against water, so it cannot be washed with water. If you are concerned about dirt, brush it and dry it in the shade.
  • I can't tell the front from the back of the Muteki insole.
    The surface (the side that touches your feet) is fabric, and the back (the side that touches your shoes) is Muteki gel.
  • The body of the G Zero Pillow Neo has started to turn yellow.
    Urethane foam is a material that turns yellow over time.
  • Can I use the Loop Ocean Towel every day?
    Yes, you can. Simply lather up some body wash or soap and rub gently onto the skin.
  • Does Loop Ocean Facial Cleansing Puff use soap?
    Yes. It is more effective if you use it with your regular cleansing product, face wash or soap.

others

  • Can Stone Barrier knives be washed in the dishwasher?
    Please do not use a dishwasher as the wooden handle may crack. The Super Stone Barrier Knife Light Type can be used in a dishwasher.
  • Is there any adverse effect on the body if the fluorine on a Stone Barrier knife peels off?
    Yes, it is harmless. Even if you swallow it, it will be excreted from the body, so don't worry.
  • What does medium heat or lower mean when using the Muteki Barrier Frying Pan?
    Use the pot on a heat level where the flame is just about to touch the bottom of the pot. If the heat is too strong, the heat will circulate easily and cause the food to burn. Also, high heat will deteriorate the coating. Because the pot has good thermal conductivity, it can be used on low heat for cooking.
  • Is the Muteki Barrier Frying Pan PFOA-free? (PTFE-free?)
    It does not contain PFOA or PFOS, which are considered harmful to the environment and health, so you can use it with confidence.
  • Can the Muteki Barrier Frying Pan be used without oil?
    No. It may cause food to burn, so be sure to apply oil before use.
  • Can knife scissors be sharpened?
    No. Please refrain from sharpening the blade yourself as it will wear down the serrated edge.
  • Please tell me how to disassemble and assemble the butt scissors.
    [Disassembly] Open the blade fully and remove it. [Assembly] Assemble while pushing the joint part from the back. For details, please watch the video ⬇︎
  • Can I use bleach on scissors?
    No. Please refrain from using bleach.
  • For how long can I use Muteki Scissors?
    This will vary depending on how often you use it and the ingredients you cut.
  • 切れ味が悪くなることはありますか？
    ムテキバサミはセレーション（ギザ）加工がしてあるあり、かしめ部分にあるウェーブワッシャーというバネのようなものによって常に刃と刃が同じ角度になるように作られているため、うまく噛み合わさり長く使っていただけるハサミとなっています。
  • ムテキバサミが錆びた。包丁が錆びた
    ハサミや包丁は他のステンレス製品と違い、切れ味を出すために炭素を多く含んでいます。水分や食材の成分が残った状態で放置すると、錆びることがあります。 錆びてしまった際には、サビ消しゴムやクレンザーで落としてください。
  • Is it better to remove the insole that is originally in the shoe or to put the Muteki insole on top of it?
    If your shoes fit perfectly, remove the original insoles, but if they are not tight, place them on top of the original insoles.
  • Can Muteki insoles be washed with water?
    The sponge part is weak against water, so it cannot be washed with water. If you are concerned about dirt, brush it and dry it in the shade.
  • I can't tell the front from the back of the Muteki insole.
    The surface (the side that touches your feet) is fabric, and the back (the side that touches your shoes) is Muteki gel.
  • The body of the G Zero Pillow Neo has started to turn yellow.
    Urethane foam is a material that turns yellow over time.
  • Can I use the Loop Ocean Towel every day?
    Yes, you can. Simply lather up some body wash or soap and rub gently onto the skin.
  • Does Loop Ocean Facial Cleansing Puff use soap?
    Yes. It is more effective if you use it with your regular cleansing product, face wash or soap.
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How to use the product?

We upload it to YOUTUBE from time to time!

Muteki Makura

Mugen Brush

G-Zero Pocket Umbrella

Mugen Knife

Muteki Insole

Skimile

Check out other videos here

SUPPORT

Customer Support

To ensure that you can use your product for a long time, we sell and replace parts. Please check the product number in advance.

If the problem persists, please contact us using the form above.

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