Garment-dyed, piece-dyed or yarn-dyed: how do the results differ?

Main answer

Garment dyeing colours the finished piece, giving a soft, lived-in look but some variation from piece to piece, piece dyeing colours the fabric before cutting and gives more consistency, and yarn dyeing colours the yarn before knitting for stripes and heathers. Choose by the look you want, the consistency you need and the cost.

Three methods

In garment dyeing, the finished, sewn garment is dyed in a machine. In piece dyeing, the fabric is dyed in the roll or in batches, then cut and sewn. In yarn dyeing, the yarn is dyed before it is knitted or woven, which allows stripes, checks and heather effects. Each stage changes the look and the risk.

Look and consistency

Garment dyeing gives a soft, slightly faded, vintage feel, since the garment is washed as it is dyed, and every piece can differ a little. Piece dyeing gives uniform solid colours and is standard for most basics. Yarn dyeing gives rich pattern options and depth, but cost and minimums are higher.

Practical issues

Garment dyeing means all components must take dye, so threads, labels and trims can show different shades, and shrinkage happens in the dye bath, so the pattern must allow for it. Small orders can suit garment dyeing, since colours can be changed late. Piece dyeing needs fabric lots and careful shade matching between rolls.

Cost and minimums

Garment dyeing can suit small runs because blank garments can be dyed to order. Yarn dyeing usually needs larger yarn lots and longer lead times. Piece dyeing sits in the middle. Ask for minimums per colour for each method before you plan your range.

What to test

Request colour fastness results, such as washing fastness under ISO 105-C06, for each method and your colour. Check shrinkage, colour variation between pieces and the match of trims. Write a shade tolerance with a limit sample. See hoodie styles and finishes and washed oversized hoodies.