This 1 liter bottle of Pretreatment is a non-toxic spray that needs to be applied to the garment before printing white or color ink on dark garments. Whether you have a Fast T-Jet, Flexi-Jet, AnaJet, Veloci-Jet or any DTG type garment printer, your white and color printing on dark garments will POP with vibrancy. THIS PRETREATMENT IS PREMIXED....SO DO NOT DILUTE THIS PRETREATMENT All Direct to Garment Printers that print white ink on dark garments require some sort of garment pretreatment. Usually the pretreatment is a spray and you spray the shirt and hit it with a heat press. This lays down all the fibers, giving you a nice, smooth garment to print. The pretreatment also helps ink to adhere to the garment, giving you a more vibrant final print and little or no fibrillation (small fibers sticking up out of the ink).   Not for use with the brother ink 0.94 liter