When you have a bad day, you've got a few options: you can put on some Daniel Powter and rock it out, you can turn on your favorite TV show, or you can look at pictures of Zac Efron's smile. His perfect, pearly white smile that is 100 percent, no matter what guaranteed to brighten up your life.

Because Zac is perfect and today (Oct. 18) is his birthday, here are all the times that he has blessed us with his smile and immediately made all of our days just a little bit better.

Worried about midterms? Bam, Zac Efron smile.

You can't be sad looking at this face.

Stressed out? Zac's got you.

Smile all your troubles away.

Zac won't let anything bad happen to you.

*My shiny teeth that twinkle, just like the stars in space.*

Zac Efron is basically grown up Chip Skylark.

Bad day? Not anymore.

Get pumped.

The smile seen around the world.

You're a superstar.

How could you be upset looking at this face?

Better than a plate of cookies.

Nothing to see here... besides Zac Efron's perfect smile, of course.

It's basically contagious.

How could you say no to this face?

This smile is pretty enough to get you through even the worst break-up.

Smile plus a wink? Okay!

Don't try to deny it, you're in love with Zac's smile.

Big grins for big fun.

Double the smiles!

And of course, the best smile of all.