Available in a wide variety of colors (for all natural fabrics (cotton, silk, wool, linen and rayon) and polyesters and nylons). There are also two laundry aids: Color Remover which will remove or lighten a color and brighten whites and Sun Blocker which, when added to the wash cycle will penetrate clothing and block harmful UV rays from the sun. iDye comes in a packet that dissolves in water which means there is no handling of messy dye powders. Just throw the dye packet in add salt and run through the wash cycle. It is ultimately the easiest way to get gorgeous color! Packets weigh 14 gms and will dye 2-3 pounds of fabric each.