Exterior car pieces are often made from a variety of materials, including metals, polypropylene, polycarbonate, and polyurethane, but not typically from polyethylene. Polyethylene is more commonly used in automotive interiors or in non-structural components due to its lower strength and rigidity compared to materials like polypropylene. Exterior parts require materials that can withstand high temperatures, impacts, and UV exposure. Manufacturers might opt for polyethylene in components where flexibility and low cost are prioritized over durability and strength. However, for structural elements and exterior panels that need to maintain shape and withstand environmental conditions, tougher materials are preferred.

Coating cups for sublimation involves applying a special polymer coating that can withstand high temperatures and adhere to the sublimation dye. Start by cleaning the cup thoroughly to remove any dust or oils. After drying, apply a sublimation coating spray evenly around the cup's surface. Ensure the environment is dust-free and follow the coating's specific instructions, which usually involve letting it dry for a few hours. Some coatings might require curing in an oven at a specified temperature to set the coating. Once cured, the cup is ready for the sublimation process, where you can transfer your desired design onto the cup using sublimation ink and heat press.

Good Dye Young is a vibrant and bold hair dye brand co-founded by Paramore's Hayley Williams. The line includes semi-permanent dyes, which typically do not require the use of a developer. Developers are mostly used with permanent dyes to open the hair cuticle for color deposition. Good Dye Young's semi-permanent dyes deposit color on the outside of the hair shaft, making the application process simpler and less damaging to hair. For best results, applying the dye to lightened or bleached hair is recommended to achieve the true-to-tube color vibrancy. However, always check the specific product instructions, as formulations may vary.