Aizome Basics: One Vat, Six Dips
From building the vat to pulling the cloth — how many dips decide how deep the blue becomes.
Indigo is not so much dyed as it is *raised*.
Indigo pigment does not dissolve in water. A living, fermenting vat reduces it into a yellow-green form that fibre can hold. Cloth goes in, comes out, meets the air — and turns blue before your eyes. Every repetition deepens the shade. Folk wisdom calls it “one dip, one airing”; our deep indigo takes six dips or more.
Building the vat: keeping the indigo alive
A new vat is fed rice bran and lye water, stirred daily, until a blue-violet flower — hana — blooms on its surface. Only then is it awake. Dyers begin every morning by checking the vat, the way a baker checks a sourdough starter.
Dipping: a collaboration with time
Press the cloth evenly under the surface; trapped air leaves white blotches. It emerges yellow-green and oxidises to blue within minutes. Want kon — the blue of nightfall? Back into the vat for another round. Depth is never a matter of waiting; it is a matter of repeating.
After the sixth dip we hang the cloth in the shade. It keeps changing — which is the most seductive part of aizome: the colour truly begins after it leaves the vat.
Raising colour: the wearer dyes it too
The whiskers on denim, the fade on a canvas bag — these are the wearer’s own dye marks. Naturally dyed indigo keeps shifting with wear, sunlight and washing. We call this cultivating colour: you are not only wearing the piece, you are taking part in its second dyeing.