Dyed materials are fabrics or other substances that have been colored using various techniques. The dyeing process can involve natural dyes, derived from plants and minerals, or synthetic dyes, which are chemically produced. Commonly dyed materials include cotton, wool, and silk, each requiring specific methods to achieve vibrant and lasting colors. The dyeing process can be done in several ways, such as immersion dyeing, where the material is submerged in a dye bath, or tie-dye, which involves tying sections of the fabric to create patterns. The choice of dye and technique affects the final appearance and durability of the color on the material.