Hey Newbie!!!
I have tried the egg thing...numerous times!

I use the whole egg though. I haven't done it in a LONG time. I don't know that it did anything that special for my hair. I just did it because I read that it was suppose to be good for your hair

...I believe for the protein.

I think the mayonnaise did more than the eggs, but again that's yukkie...it smells so gross. So, I wouldn't really recommend doing the egg thing. I would however recommend the olive oil as a hot oil treatment and the vinegar as a clarifying rinse...they both do a good job.
Let me know if you try any of these, K.