Care & Maintenance

Kakishibu is alive.
Here's how to live with it.

A SHIBUI piece isn't finished the day it arrives — it keeps changing for as long as you wear it. A little care in the first few months makes a real difference to how it ages. Here's everything you need to know.

The essentials

Do this. Not that.

The short version, if you only read one section.

✓ Do

🧴
Hand wash in cold waterUse a mild, colour-safe detergent and cool or cold water only.
🌤️
Dry flat, and get some sunOccasional indirect or gentle direct sunlight is what deepens kakishibu naturally.
🔄
Always wash aloneNever wash it with other clothes, in any wash. Machine wash cold (30°C) on a gentle cycle is fine; hand washing is gentlest.
🧺
Iron on reverse, low heatIf you need to press it, always iron the inside of the fabric.

✕ Don't

🚫
Wash with other clothesColour can transfer onto other garments, and dissolved iron can mark them.
🚫
Use bleach, softener or a tumble dryerBleach strips the dye; softener coats the fibre; tumble drying is too harsh on a hand-dyed pigment.
🚫
Leave it damp and balled upEspecially after sweating — this is when colour transfer is most likely.
🚫
Expect it to stay the same colourIf it hasn't changed after a few months, something's wrong — not right.

Step by step

How to wash it properly

1

Fill a basin with cold water

Lukewarm at the very warmest — never hot. Add a small amount of mild, colour-safe detergent and mix until dissolved.

2

Submerge and gently agitate

Swirl the piece by hand for 2–3 minutes. Don't scrub, wring, or twist the fabric.

3

Rinse in cold water until clear

Change the water once or twice. Some colour release in early washes is normal.

4

Press out water, don't wring

Lay the piece flat inside a clean towel and press gently to remove excess water.

5

Dry flat, out of direct midday sun

Reshape while damp. A little morning or afternoon sun is good — avoid hours of harsh midday heat.

Machine washing

Machine wash: alone, and at your own risk

How: cold water (30°C), gentle cycle, the garment on its own, then dry flat or hang in shade. Do not tumble dry, bleach or use fabric softener.

Disclaimer: kakishibu can release colour, and iron in the dye can dissolve in the wash water. SHIBUI accepts no responsibility for colour transfer onto other garments or items, for staining or rust-like marks caused by dissolved iron, or for any effect on your washing machine. If you are unsure, hand wash.

What to expect

The colour is a timeline

Kakishibu deepens with UV exposure and wear. This is the whole point of the dye — not a defect to correct for.

Day 1

Warm amber-tan. Fabric feels slightly stiff — this softens with the first few washes.

Month 3

Noticeably darker and richer. Hand of the fabric is softer, more relaxed.

Year 1

Deep chestnut (or near-black, for iron-dyed pieces). Distinctly yours — no two pieces age the same way.

Year 5+

A living heirloom. The colour reflects years of light, washing, and wear specific to you.

A note on scent

Why it smells a little different

Freshly dyed kakishibu has a faint, earthy, slightly tangy aroma — a natural result of fermentation, not a flaw. It's the same reason kakishibu has been used for centuries as a natural preservative.

The scent fades noticeably within the first few weeks of wear and fresh air, and disappears almost entirely after the first few washes.

Common questions

Care questions we get

Yes — on its own, cold (30°C), gentle cycle. Never wash it with other clothes. Hand washing is still the gentlest option and protects the piece best in its first year. Please read the washing-machine disclaimer above.
Yes, especially in the first 8–10 washes. Kakishibu continues to bind to the fibre over time, so early washes release a little excess pigment. This is why we recommend washing separately at first. It settles down considerably after the first few months.
Almost certainly not — colour variation (mura, 斑) is a hallmark of hand-dyeing, not a defect. Folds, seams, and layers of fabric absorb kakishibu slightly differently, and sun exposure isn't perfectly even across a garment. This unevenness is part of what makes each piece one of a kind.
Wearing it often and giving it regular time in natural light (even indirect light through a window) is the most reliable way. Avoid the temptation to bake it in direct midday sun for hours, though — gradual, repeated exposure gives a more even result than one intense session.

Look closely

Hems, cuffs and seams are where the dye settles first. Expect them to darken with wear.

Ribbed cuff of a kakishibu-dyed long-sleeve T-shirt
Rib cuff
Button cuff and placket of a kakishibu-dyed Oxford shirt
Oxford cuff
Sleeve of a kakishibu-dyed hemp cotton shirt
Hemp cotton sleeve
Hem of a kakishibu-dyed T-shirt
T-shirt hem

Questions about a piece you own?

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