I think it's either air, time or nature!
I turn polar bears white (time and nature)
and I will make you cry. (air, time and nature)
I make guys have to pee (time and nature)
and girls comb their hair. (time and nature)
I make celebrities look stupid (time)
and normal people look like celebrities. (time)
I turn pancakes brown (time and nature)
and make your champane bubble. (time and nature)
If you squeeze me, I'll pop. (air, time in a questionable way)
If you look at me, you'll pop. (air since you cannot see it time in a questionable way)
Can you guess the riddle?
I say the answer is Time!