I am good at concealing what’s real and hide what’s true. Sometime, I bring out the courage in you! What am I?

Question

It’s true I bring serenity,

And hang around the stars,

But yet I live in misery,

You’ll find me behind bars.

With thieves and villains, I consort,

In prison I’ll be found,

But I would never go to court,

Unless there’s more than one.
What am i?

Answer 1

The answer is Makeup.