Egg Yolk soap - anyone have idea about shelf life?

[RogueRose]

I remember a number of threads almost a year back where a number of people were making egg yolk soap. I'm curious if anyone has any results on the shelf life and how the soap aged. Any info on it is much appreciated!

 

[Obsidian]

The shampoo bars I made with egg are well over a year old with no issues. I used 1 yolk PPO.