Are you a
Costume
Do you think that I can hide you from your friends?
They may not recognise you.
I'll have them seeing you through a different lens.
Maybe you are wearing a mask.
So don't be surprised if you can't recognize, Given that I'm a very familiar guise.
Make, funny-nose-and-glasses, or a clown
Underneath all these lies, I'll protect what you hide, I'll convince all their eyes, your secret is what I pride.
Mask or face paint.
So beware what you see, this face smiling happily.
Umm, a creepy clown smile/face paint.
Ere what you were, will be forced upon you unhappily.
Halloween costumes?
Hidden hint
The first letter of each line spells disguise.