Answer:
I have to be broken before I can be used
Break me and I am better immediately set and harder to be broken again.
The more of me there is the less you see.
I am a seed with three letters in my name. Take away the last two and I still sound the same. What am I?
If I drink I die. If I eat I am fine. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?