There is little doubt about Pre-treating T-shirts as the cornerstone of the DTG printing process. As we move into the digital age, a lot of development has paved in with inks and the printing industry has adopted a wide range of fabric printability integrated with cutting-edge pretreatment solutions. Without pre-treatment, your designs won’t turn out the way you want them.

How to pretreat T-shirts for DTG printing? To get optimum results, spray the T-shirts with a pretreatment liquid. The liquid allows the ink to gel properly with the fabric for a vibrant result. Press the shirt in a heat press for few seconds. And guess what, your pretreated T-shirt is now up for DTG printing!

This blog post puts light on a few aspects such as what is a T-shirt pretreatment, why pretreatment is important, what is the right pretreatment for your garment and much more.

How to Pretreat T-Shirts for DTG Printing?

The actual process of pretreating a cloth prior to printing is something that will probably be around for a long time. Following are a few steps you need to follow for pretreating t-shirts prior to DTG printing:

  1. Get a large plastic container and create a stand to hold the plastic at a semi-upright position.
  2. Switch on the heat press and turn the temperature to the volume suggested by the pretreatment manufacture
  3. Press your shirt in a heat press for about 5 seconds to reduce the moisture level
  4. Adjust the settings until you get the perfect spray pattern. Obviously, you don’t want to drench the shirt, right?
  5. Start spraying from side to side, moving in a downward position and repeat the action.
  6. Now bring your shirt to the heat press and hover it over the shirt for 11-16 seconds.
  7. Use a Teflon sheet to press the shirt for 5 seconds
  8. Remove and replace the Teflon sheet. Repress the amount of time as instructed by the pretreatment manufacturer.

Challenges Faced by Users for Pretreatment T-shirts

Pretreating the clothes is no child’s play. Putting the right pretreatment is an art in itself. The process is as important. Yet, the process of garment pretreatment has given birth to numerous challenges such as time interval of pretreatment, poor wash results, over pretreating, and much more.

  • Over pretreating T-shirts: Too much application of the liquid creates a heavy layer on the top of the shirt. This pushes the print away from the garment, thus, leaving it less bonded to the actual fabrics.
  • Poor wash results: Use of low-quality detergent for washing garments has attributed majorly to the poor wash results. It is commendable for a user to use a prescribed detergent to wash the garments properly, before proceeding onto the pretreatment and eventually printing methodology.
  • Timeliness of T-shirt pretreatment: Lack of information on the amount of time required for a garment to undergo pretreatment method has not benefited the users much.

What is T-shirt pretreatment?

Pretreatment is a solution that is applied to help white ink gel properly to the T-shirt you want to use. Mostly used on dark colored shirts, pretreatment is the glue-like structure that binds your ink to the shirt and keeps colors protected on the surface. Pretreating helps the color to stay longer on the shirt.

To pretreat your shirt, you initially start by utilizing a heat press joined with a heat-resistant sheet to make the surface smooth and flat. Next, you can pretreat your shirts in an all-around ventilated zone, ideally outside or in a decorated room with adequate space. Make certain your pretreatment solution is properly diluted before utilization.

You are likewise encouraged to wear a cover and gloves to secure your eyes and face against the chemicals in the pretreat arrangement. There are various application techniques from which you can pick. You may apply the pretreatment utilizing a paint roller and a handheld sprayer, or a pretreatment machine. The nature of the laydown will affect the nature of the print. A pre-treatment machine is the most consistent strategy to get your work done.

Why Pretreatment is Important?

Pretreatment of shirts forms an important constituent of the DTG printing process as it acts as a primer to the ink being used. Without it, your colors may absorb excessively and fade into boring shades. When you don’t utilize pretreatment on your shirts before printing, your shirts will look dull.

Utilizing a pretreatment will enable your white t-to shirt print to look better. Despite the fact that your print may look OK on a white shirt without pretreatment, colors and structures will look more nitty gritty and dynamic with a properly applied pretreatment base. To keep the dark shades looking clean and sharp, they require something to cling when they’re being applied.

You should utilize a shirt pretreatment when printing white ink on a dark shirt. The white ink, specifically, needs the pretreatment to keep itself up onto the surface of the shirt. This is essential so as to have the best possible surface on which the colors will be printed. Thus, the white is more brilliant and more definite, and like imprinting on a light-shaded shirt, the subtleties are sharper and more articulated.

For instance, you may attempt to print a bright white on your shirt and rather, the white ink may wind up looking dark or vigorously muted. This can make your shirt become poor in print quality and difficult to pitch to clients. By utilizing the best possible pretreatment base, your inks will pop up with lively shading and your design will turn out looking sharp.

Using the Right Pretreatment for Your Tshirts

It’s extremely regular for new DTG users to be confused about whether to utilize dark or light pretreatment. With a light pink shirt, you would use light pretreat, right? In most cases, actually no. However, it does likewise rely upon the shade of the image you are printing.

There is an exceptionally basic rule to remember: If you are printing any white ink, you need to utilize dark pretreatment regardless of the shirt color. Let’s have an overview of what, when and why of light and dark treatment.

Light Pretreatment

A light piece of clothing pretreat is used mostly on white shirts or white material. Sometimes, you don’t generally need to pretreat a white shirt. You will, in any case, get an OK print without pretreatment and a few organizations, even utilize this as a selling point. Any machine can do this, however, the print quality, color, and detail are night and day when compared with a pretreated clothing line.

The next question that might arise in your head is when and why would you utilize light pretreatment. The answer is simple. A white shirt is probably never going to require white ink imprinted on it, so white cloths are continually going to utilize light pretreat. By pretreating a white shirt with light pretreat you will see a Goliath contrast compared with no pretreatment. The colors will be significantly more energetic and darker as well as stronger and rich. You will likewise see a higher quality of detail and no bleeding of coloring.

The pretreatment will likewise go about as a bonding agent when heat pressed and increases the wash fast quality.

If you have sufficient time, print a similar image on the front and back of a white shirt, pretreat one side and compare the two prints. You will see what a distinction it makes.

Light pretreat can be utilized in different colors like pastels, however, the color in the picture compared to the shade of the shirt will be a deciding factor. The standard guideline for this is if the colors in the graphics to be printed are darker than the clothing shade, then use light pretreatment.

If you are printing a picture that is dark, purple, blue and red on a pink shirt, you can utilize light pretreat and no white. If the picture is yellow, lime green and sky blue on a pink shirt, it would require dark pretreat and white ink. Since the ink is transparent in nature, the pink of the shirt would change the shade of those lighter colors. If the picture has any white in it, you would need to utilize dark pretreatment.

Dark Pretreatment

Another method you can use to pretreat shirts before DTG printing is Dark Pretreatment. Dark pretreatment is an unexpected equation in comparison to light and plays out a couple of more tasks. The main functionality of dark pretreatment is to make a surface that white ink can be imprinted onto. Without pretreat, white ink would assimilate into the texture.

When printed, the white ink lands onto the shirt and begins to gel up when in contact with the pretreatment. This prevents the ink from remaining wet and forming bubbles giving the color ink a surface to print on and not drain or blend. When the shirt is placed in the heat press, the heat activates the pretreatment as a bonding agent so the print can get into the fibers and wind up one.

Buying inks and pretreatments from the manufacturer of your printer will, likewise, ensure that the item is a 100% genuine marked formulae. This will turn out to be imperative to the lifespan of your product.

Related Questions:

Can the pre-treatment last longer? Can you pretreat shirts in advance?

Totally. You can pretreat clothes ahead of time. It is advisable to pretreat shirts 3 weeks in advance and can expect a good outcome.

Ever need to pretreat a light color shirt?

Pretreatment is necessary for light colored garments as you will get improved color fastness, and the image will wash better and last longer.

What are the types of material used for pretreatment?

You can pretreat all types of materials except for some wood products. Using the right material for the right pretreatment method helps the gel to blend properly into the garment.

How long you need to pretreat per T-shirt?

Pretreatment usually takes less than a minute. It is best applied by using an automatic pretreat machine or a hand-held power paint sprayer.

Does the ink bleed to the back of the shirt?

No, the ink doesn’t bleed into the back of the shirt, if it is dried up properly. Dry your shirt properly before applying pretreatment. This will help you in avoiding ink bleeding issues.

Can you use a dryer to dry the prints or do you have to use an iron?

To completely dry the prints, you need to use a professional heat press. A dryer doesn’t dry the fabrics perfectly to lay down for the finest quality print.


Applying pretreatment solutions resembles waving a wizard’s wand over your clothing lines– without it, the magic won’t occur. When you have identified the best pretreatment application and inclusion procedures suitable for your business, you’ll have the power to deliver DTG magic each time you click print. A right amount of spray will give you a perfect blend of color and put a smile on the customer’s face. Happy Pretreating!

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