Why not shampoo hair that was just dyed?

Why shouldn't you shampoo your hair 4 days after you just had it dyed? Does something bad happen?Why not shampoo hair that was just dyed?
Nothing bad really happens, it's just that since your hair has been through so much with the whole chemical process, the shampoo could dry out/ frizz out your hair and add to the damage. The main thing shampoo does is make your hair smell pretty. However, you can use conditioner (usually provided if it was a box dye?) or just use a good one such as Pantene prov or dove. This will keep your hair healthy, smelling pretty and moisturized:)Why not shampoo hair that was just dyed?
It really depends on what color you had done. If you had red put on, it is because the molecules are larger and are pulled from the hair easier, so we say don't wash for 3 or 4 days so that the molecules can hold better. Sometimes with other colors it for similar reasons. I usually ask my clients not to shampoo for 48 hours.
Your hair needs some time to fully absorb the color and to have a little rest after being damaged from the dyeing process.





I usually only wait 48 hours because I can't stand it anymore, and I've never had any problems.
The color itself needs time to deposit into the cuticle, but 3 days should be plenty..If it is done professionally.
honestly i hope nothing bad happens cause i wash my hair within the 4 days...opps