Dyeing

thumb|upright=1.5|Crystal of potassium alum,

alt=Hank dyeing|right|thumb|Space dyeing right|thumb|Pigments for sale at a market in Goa, India thumb|Cotton being dyed manually in contemporary India thumb|Silk dye in pan on stove, Khotan Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness. Dyeing is normally done in a special solution containing dyes and particular chemical material. Dye molecules are fixed to the fiber by absorption, diffusion, or bonding with temperature and time being key controlling factors. The bond between t

thumb|An example of a tie-dyed T-shirt thumb|A video about how to tie-dye Tie-dye is a term used to describe a number of resist dyeing techniques and the resulting dyed products of these processes. The process of tie-dye typically consists of folding, twisting, pleating, or crumpling fabric or a garment, before binding with string or rubber bands, followed by the application of dye or dyes. The manipulations of the fabric before the application of dye are called resists, as they partially or completely prevent ('resist') the applied dye from coloring the fabric. More sophisticated tie-dye may

thumb|200 px|Mordant red 19 is a typical mordant dye. Like many mordant dyes, it features the [[azo group (RN=NR) and various sites for chelating to metal cations.]] thumb|A French Indienne, a printed or painted textile in the manner of Indian productions, which used mordants to fix the dyes

thumb|Clay earth pigments such as [[burnt sienna often have a high lightfastness]]

property of colored materials such as textiles to resist fading and running when exposed to various agencies such as washing, rubbing, daylight, etc.