Three dye points, three different products
Yarn dyeing colours the thread before knitting. The colour is inside the fibre, the surface is uniform, and stripe and jacquard patterns become possible. It is the most expensive of the three and the most predictable.
Piece dyeing colours the fabric after knitting but before cutting. You get an even colour across the roll, low shrinkage because the fabric can be tumbled and set afterwards, and a shorter lead time than garment dyeing.
Garment dyeing colours the sewn shirt. The seams, the rib and the body all take the dye at slightly different rates, which is the soft, slightly irregular surface the vintage look is chasing. It is also the only one of the three that can produce a true washed-down effect without a chemical finish.
- Yarn dyed: colour before knitting, sharpest detail, highest cost.
- Piece dyed: colour before cutting, most even, standard blank look.
- Garment dyed: colour after sewing, softest hand, batch variation expected.
What "sun faded" and "vintage" actually mean in production
A sun-faded finish is not achieved by leaving shirts outside. It is a controlled sequence: garment dye, then an enzyme or stone wash to break down the surface, then a second tinting pass on some styles to push the faded areas.
The practical consequence is that fade is a batch property, not a printed pattern. Two production runs of the same colour code will differ slightly, and that is normal rather than a defect — but it means a reorder placed six months later has to be accepted as a near-match, not an exact match.
This is also why a sun-faded style should not be mixed into one shipment with a solid piece-dyed style and sold as a matching set. They are different processes with different surface behaviour.
Shrinkage and colourfastness: what to plan for
Because the shirt is dyed after sewing, the fabric has already been cut and joined before it sees water. Garment-dyed cotton typically moves 3–5% on the first wash, against 1–2% for a piece-dyed, pre-shrunk fabric of similar weight.
Size the pattern for the finished shirt, not the greige cloth. If a buyer measures a garment-dyed sample straight out of the bag and orders to that measurement, the delivered shirts will come in smaller after the first wash.
Colourfastness is tested by washing against a multi-fibre strip and reading the staining. The relevant method here is the ISO 105-C06 wash test, and a garment-dyed dark shade commonly lands a half to one full grade below the same shade piece-dyed. If the end use is heavy industrial washing, garment dyeing is the wrong route.
Where garment dyeing earns its cost
It earns it when the surface is part of the product: streetwear drops, vintage-inspired basics, tonal collections where the customer expects visible variation. It does not earn it on a uniform programme or a promotional tee, where consistency across reorders matters more than hand feel.
It also costs time. The dye, wash, tint and dry sequence adds days to the production calendar compared with taking a dyed roll off the shelf, so a garment-dyed order placed on a tight deadline is the order that arrives late.
- Good fit: streetwear, vintage washes, tonal seasonal drops, brand-led colour programmes.
- Poor fit: uniform, promotional, anything reordered to an exact colour match.
- Always sample first: a dyed sample and a bulk batch are two different runs.
What we need to quote a garment-dyed order
Body colour and the target surface (solid, vintage, sun faded, or a two-tone effect), a Pantone or physical reference, the fabric weight, the size run, and the quantity per colour and style.
A physical reference beats a code. Garment dyeing on a 230gsm body and the same code on a 160gsm body read differently, and a lab dip on a swatch does not guarantee the sewn shirt.
Garment dyeing is one of six decoration routes we run. The others are screen printing, embroidery, DTG and DTF, puff print, and private label with custom neck labels — each with its own page, its own minimum and its own failure mode.