AFAIK you need two packets of hand dye to substitute for 1 of machine dye.
Can you use dylon hand dye in the washing machine. The instructions for Dylon Fabric Dye. The main difference is that your salt is already added for you and you must not use metal bowls or pots as they can corrode. The staining will not affect following washing loads.
Add your garment to be dyed. Dont use a pre-wash and dont add any washing powder to the machine. The shade you achieve will depend on 3 things.
The staining will not affect following washing loads. You can also use hand dye in a machine. We are basing this guide on the use of Dylon clothing dyes which are widely regarded as the most popular and most well-known fabric dyes in the UK.
Remove from the machine. If it is still ok after that then yes I find Dylon works fine but expect a paler shade than on cotton. Httpwwwdyloncoukproductsdyesfabric-dye-for-hand-use I imagine for jeans youd need a couple of packs.
Q - Why do I need to use salt. Put the dye in the drum of the machine and cover the dye with the salt. Wash fabric thoroughly even if new to remove stains or dressings which may not be visible to the eye and leave damp.
To use DYLON Machine Dye pods place damp clothes in the washing machine and put the unopened pod on top of them. The longer the item is in the dye the darker the color will be. A - Yes it is possible to use Dylon Multi-purpose Dye in a washing machine.