Answer:
I am the word that is always spelled correctly by everyone.
I have a strong affection for belly buttons.
I am black when you buy me red when you use me when I turn white you know itβs time to throw me away.
What can you lose that will cause other people to lose theirs too?
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?