Our Neon / Fluorescent transfers should be applied at 375 degrees with medium-to-heavy pressure for 8-10 seconds. These are hot peel transfers, so they should be peeled almost immediately after being pressed. While it is not required, you can press them again for 5-10 seconds with Kraft paper to give you peace of mind that the product is completely cured to the garment. If you are struggling to keep the opacity of the ink with our Neon / Fluorescent transfers, you are likely using too much heat, pressure, or time when pressing them.