Some breads can be brushed once before fermentation and once again before baking, so that there will be a contrast between the two colors on the dough surface, and the effect after baking will not be as monotonous as brushing only one layer. This method is suitable for multi-faceted bread, such as common braided bread and praise.

In addition, brushing bread with different materials will have different effects, sometimes it can make bread look darker and more appetizing, and it is also convenient for some ingredients to stick to the dough, such as sesame, which everyone likes, to increase the value of bread. Therefore, before baking, it is most common to brush bread with egg yolk, which will give the skin the deepest color.