Rit ProLine has an advanced mix of direct, acid, and disperse dyes that let you dye a wide range of fabrics and materials in large quantities. Ideal for dying industrial textiles (carpet patchwork), jumpsuits and uniforms (corporate, correctional, and government institutions), wardrobing (movies, TV, and theatre), cosplay costumes, clothing makers, 3D printing, concrete, and more.Our ProLine formula comes in a powdered form and is safe for septic and sewer systems because it is non-toxic. We've been making things in the United States for 100 years, so we've come up with the most reliable, time-tested quality control standards in the industry. So, you can be sure that the product you get will be high-quality, consistent, and effective.