0_Apprentice
I have blond hair, what do you think of people with that hair color?
1_Wizard
Sometimes I wish I had blonde hair, or fair hair. They have low levels of eumelanin. 
0_Apprentice
What is eumelanin? I like it, but sometimes I need a change, plus it gets thick.
1_Wizard
Eumelanin is just a dark pigment that humans have to give hue to hair.
0_Apprentice
Oh that is interesting. Never heard of that word before. If I ever want to change the color I usually have to dye it all or it looks funny.