Discharge Ink

Discharge ink is a water-based ink carrying a discharge agent that, when cured at 320-330°F for a couple of minutes in a conveyor dryer, breaks down the dye molecules in the garment underneath it rather than laying a film of pigment on top. Where the ink sits, the shirt's original color discharges out — a black tee can bleach back to its raw cotton color or take on whatever pigment was mixed into the ink itself.

This is what gets buyers a soft-hand, almost vintage-looking print on dark cotton that a heavy plastisol layer can't match — the design becomes part of the fabric's color rather than a raised layer sitting on it. It works reliably on 100% cotton, reactive-dyed garments like Gildan's 2000 or Bella+Canvas's 3001 in darker colorways. We always run a test discharge on a swatch from the actual dye lot before committing to a full run, because results vary noticeably between dye lots even on the same style number.

Pros reserve discharge for orders where softness and a faded, worn-in look matter more than opacity or exact color-matching, since discharge results shift with the base garment color and can't be perfectly Pantone-matched the way a plastisol overprint can. It's the standard choice for band merch and vintage-style graphics on dark shirts.

Buyers often expect discharge to work on any dark shirt; some dyes, particularly certain pigment-dyed or discharge-resistant reactive dyes, won't fully discharge and leave a muddy, incomplete result instead of a clean color change. That's exactly why a test swatch on the actual dye lot comes before the press run, not after.