Salt helps by making the dye solution stick to the cloth fibers.
blue dye
1. Crush the apple and shake it in warm water to extract the soluble substances 2. Take some of the water that had the apple in it and add it to 2cm3 of a 0.1% solution of DCIP (a blue dye) 3. If vitamin C is present, the blue dye will go colourless
I think what would happen is that the cloth would not keep it's colors after washing since salt makes the dye stick to the cloth.
to preserve foods, dye fabric, and de-ice roads
A treatment with HCl solution or H2SO4 may be useful.
sugar salt powdered milk milo dye
Red and Yellow dye.
stem
Yes, some natural dyes can be added to salt.
Not really. The purpose of putting vinegar into the dye is to acidify the solution and allow the dye to bind more strongly with the protein portion of the eggshell. Aniline dyes are acid dyes and need an acidic environment to work well and quickly.An eggshell is composed of protein and calcium carbonate; if there is too much acidity, the calcium can begin to dissolve. If you have to much vinegar in the dye, then dye solution might begin to actually etch surface of the egg and possibly damage it.However, if you double the dye and also increase the volume of the water then you will need more vinegar. What is important is not so much the amount of vinegar, but the concentration of the vinegar in solution.
blue dye
All you need to do is add the dye, although it might not come out as red as you want it. If you do want it Pillarbox red though, bleach it first. :)
Red and Yellow dye.
Contact lens cleaner is a kind of liquid solution.
The dye solution will dry
pink dye.
Wax, salt and flour.