While it is true that eggs are cleaned before being packaged and sent to your grocery store, they are not bleached. In fact, most eggs start out white, but different breeds are genetically coded to release different colored pigments as the egg passes through the hen's oviduct. Voilà!

Are store bought eggs bleached white?

So, no — white eggs are not bleached. In fact, all eggs start as white eggs inside the chicken. It takes over 24 hours for an egg to be fully formed within the hen's reproductive system, and it's only during the very last step of the process that a pigment is sometimes deposited on the egg to determine its final color.

What is difference between brown and white eggs?

Aside from the colour of the eggshell, there is little difference between brown and white eggs. The eggshell colour depends on the breed of the hen. Generally speaking, white shell eggs come from hens with white feathers, while brown shell eggs are produced by hens with brown feathers.