What causes dull or faded colors in my sublimation prints?

It is normal for sublimation ink to look dull when it's first printed on the sublimation paper. Once the print is sublimated onto the substrate with the right heat and pressure, the ink converts to a gas and infuses into the material and the colors will become bright and vibrant.

Following to all instructions and not achieving the desired results? There must be additional reasons contributing to this, such as:

The design was transferred using a longer time than necessary, or the temperature and pressure were insufficient. Consult your blank supplier for information on these settings.
Some blanks come with a protective covering. Ensure you remove it before proceeding with the sublimation process.
Excess moisture can disrupt the sublimation process, causing ghosting, uneven transfers, or dull colors. Store blanks in a dry environment to prevent these issues.

Note:

Parchment paper and Teflon sheets are not recommended for sublimation crafting because their coatings can trap moisture rather than release it. In contrast, butcher paper is preferred as it absorbs moisture effectively, ensuring even heat and pressure distribution. This leads to a more consistent transfer of the design onto the substrate.

Here are some tips;

A dehumidifier in your workspace can help remove excess moisture from the air.
Heat-resistant tape is useful for securing prints, preventing slight movements that could cause ghosting or a shadowy effect.
Always follow the peeling instructions specific to the blanks you're using.
For the best results, use a heat press instead of a heat gun or iron to ensure reliable application.