Purchase a large or medium rounded brush. Soft bristled brushes, such as nylon, help blend colors on silk.
Buy a medium flat tipped brush. A soft synthetic brush is best for blending colors on lightweight fabrics like silk.
Choose a thin liner brush for painting details or small areas. Synthetic fibers work well, but goat or squirrel hair brushes will hold more dye.
Get a large or medium sized foam tipped brush. These work well when applying dyes to large areas.