Answer:
It is worldwide, but once only a spider could weave one
What is weightless but it needs two person to hold it?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?
It comes only before, it comes only after. Rises only in darkness, but rises only in light. It is always the same, but is yet always different.
When set loose I fly away. Never so cursed as when I go astray.
The sun bakes them, The hand breaks them, The foot treads on them, And the mouth tastes them. What are they?