Do you think that I can hide you from your friends?
I'll have them seeing you through a different lens.
So don't be surprised if you can't recognize,
Given that I'm a very familiar guise.
Underneath all these lies, I'll protect what you hide,
I'll convince all their eyes, your secret is what I pride.
So beware what you see, this face smiling happily.
Ere what you were, will be forced upon you unhappily.
What am I?