For starters, I know about keratin, and that hair is “dead” so it can’t be made healthy by slathering things on it.
Now that that’s out of the way, does adding protein (for example, a raw egg) to hair do anything to improve its look and feel that regular conditioner wouldn’t do? I read an article that encourages people to put things like eggs, beer, avacadoes and honey into their hair, then rinsing and adding a light oil. If these things do work, I’m assuming that some of the molecules are binding to the hair then the oil is locking it, and some water in. Correct? Couldn’t you get similar results from a bottle of stuff on a store shelf?
Also, what changes are going on in hair when styles are formed? When hair is flat ironed, does it straighten because the disulfide bond is broken, or is it something else? Why does hair go back to its natural state when it gets wet, then dries? What’s going on with perms, relaxers and dyeing? I’m looking for specific, in depth answers here if possible.