Dissolve powder in 0,5 l hot water and pour through sieve. Use big pot with plenty of room for the material to move freely. Otherwise the colour will dye unevenly. Wet out the textile in warm water and wash if needed, put in dye solution. Heat until the pot is 70 C stirring occasionally for evenness of colour. Keep it hot for about 1 hour. Let cool and wash in warm water to remove excess dye.