The Philosophy of Aizome
Aizome-dyed products, using natural Japanese indigo, are meant to evolve with use rather than remain “new.” Each subtle variation in tone and every small sign of wear reflects the story of your training. Moreover, proper care does not stop the transformation; instead, it allows your gear to develop a beautiful patina. This aged look is highly valued in traditional budō and kendo.
Understanding Aizome
Indigo dye sets naturally through oxidation within the fiber. Therefore, there is no chemical fixative that locks the color. In fact, fading occurs gradually over time, especially during the first months. Friction causes most wear, not washing. However, with correct handling, the color stabilizes and gains character as the garment ages.
Initial treatment for new gear
To reduce initial bleeding of indigo, follow these steps:
- Use cold water.
- Add one cup of vinegar (apple or white) per 4–5 liters.
- Soak for 10–15 minutes.
- Rinse gently with cold water.
- Dry in the shade.
This treatment removes residual alkalinity from the dye. Additionally, it improves initial color stability. Perform it only once.
Daily care after training
After most sessions, washing is unnecessary. Instead, shake the garment to remove moisture and hang it fully extended in a ventilated area. Meanwhile, let it dry completely before storing. In fact, natural indigo has antibacterial properties, so odors usually disappear with proper ventilation.
When to wash
Wash only if:
- Odor persists.
- Fabric feels stiff from sweat salts.
- Several weeks have passed without washing (2–4 weeks of regular practice).
Excessive washing accelerates fading. Therefore, it should be avoided whenever possible.
Correct washing techniques
Hand washing (recommended):
- Use cold water.
- Avoid detergent or use very mild neutral soap.
- Soak briefly (max. 5 minutes).
- Press gently; do not twist.
- Rinse quickly with cold water.
Machine washing (only if necessary):
- Turn the garment inside out.
- Place it in a laundry bag.
- Use a delicate cycle with cold water.
- Avoid strong spinning and fabric softeners.
Proper drying
Hang the garment fully extended and always in the shade. Avoid direct sunlight, which can fade the indigo. Never use a dryer.
What to avoid
❌ Hot water
❌ Common detergents or bleach
❌ Fabric softener
❌ Dryers
❌ Rubbing localized areas
❌ Leaving the garment damp and folded
About color bleeding
Slight bleeding is normal, especially at first. Always wash separately, particularly in the first months. Over time, bleeding diminishes. As a result, the color changes become part of the garment’s charm and character.
