WB Screen Lubrication is designed for use with water based inks. It lubricates the screen making it easier to print water-based inks. It also helps in preventing ink from drying in the screen. Apply by misting the screen and use a squeegee to even the application. Then put your ink in the screen and do a test print. It may take a couple of prints to work in the lubrication and make sure print are coming out correct.