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Kuro Roiro Urushi – Intermediate black lacquer for Kintsugi

SKU KURO.ALU.50

Kuro Roiro Urushi is a traditional Japanese black lacquer used as an intermediate layer in the practice of kintsugi .


It is applied after Mugi Urushi or Sabi Urushi in order to even out the surface, correct small irregularities and prepare a smooth base before the finishing stages.

Role in kintsugi

This intermediate layer allows for a regular surface before the application of a finishing lacquer, such as Bengara Urushi , or before the application of metallic powders such as gold or silver .


Main functions:

  • Surface smoothing after the filling and repair stages
  • Preparing the finish before the final layers of urushi lacquer
  • Regular base for the application of metallic powders
  • Durable finish suitable for traditional Japanese kintsugi techniques

Kuro Roiro Urushi thus constitutes an important step towards achieving clean, regular and durable kintsugi repairs.

Quantity

Item details

  • Product: Kuro Roiro Urushi Black Lacquer

  • Contents: 50g aluminum tube

  • Origin: Japan

Precautions for use – Urushi lacquers

Urushi lacquers, derived from the sap of the lacquer tree ( Toxicodendron vernicifluum ), are natural and durable but require certain precautions.

Handling and safety

  • Always wear gloves (nitrile or vinyl): fresh urushi can cause allergic reactions (eczema).

  • Do not handle with bare hands.

  • Work in a well-ventilated area, away from food and drinks.


Drying

  • Urushi dries by oxidation under humidity (75–80% / 20–25°C).

  • Drying time: from 12 hours to several days depending on the thickness and conditions.


Cleaning and storage

  • Clean the tools with vegetable oil (camellia, rapeseed…), then with alcohol or soap.

  • Keep the tube tightly closed, away from heat and light.

  • Do not allow the lacquer to dry on the tools.


In case of contact

  • Rinse immediately with vegetable oil, then with soapy water.

  • Consult a healthcare professional if a skin reaction occurs.

Shipping & Delivery

Delivery to France, Belgium, Luxembourg, Switzerland, Italy, Spain and throughout Europe

All orders are shipped from Bordeaux, France, with a tracking number.

We ship our Urushi lacquers, kintsugi kits, powders, and accessories throughout Europe. All orders are shipped with a tracking number.

  • 🚚 Free delivery on orders over €50.
  • Same day dispatch for all orders placed before 2pm Paris time , Monday to Friday.
  • Careful packaging to protect the products during transport.

Delivery times

  • 🇫🇷 France: 24 to 48 business hours
  • 🇧🇪 Belgium: 2 to 3 business days
  • 🇱🇺 Luxembourg: 2 to 4 business days
  • 🇮🇹 Italy: 3 to 5 business days
  • 🇪🇸 Spain: 3 to 5 business days
  • 🇨🇭 Switzerland: 5 to 7 business days , depending on customs formalities
  • 🇪🇺 Other European Union countries: 3 to 7 business days
  • 🌍 International: 7 to 15 business days , depending on the destination

Delivery times are estimates and are calculated from the date of dispatch. Deliveries to Switzerland and other countries outside the European Union may be subject to customs duties, local VAT, or other charges.

Learn more about delivery and returns →

Urushi conservation tips

To preserve the quality of urushi , it is essential to follow a few simple rules:

  • Cool, dark place : store away from direct sunlight, in a temperate location.

  • Shelf life : approximately 1 year. After this period, the lacquer may change color or viscosity.

  • Refrigeration : To extend storage over several years, place in the refrigerator in a separate airtight container, away from food.

By following these recommendations, you will ensure optimal quality urushi for your future projects.

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