Yes, both eggs and mayonnaise are very beneficial to the hair. These products contain fats that the hair readily absorbs and eggs have strengthening protein too.
You apply the chalk directly to the strand. Take a thin section of hair and color with either the end or the side of the chalk, using downward strokes.
If your hair is severely damaged, it will not be possible to get a color that requires pre-lightening, such as pink, without risking severe damage and breakage.
You can use Ecoegg Laundry Egg for washing eggs and for hireing a vehicle for transporting it depends on where do you live as services vary from place to place.