YOUR beauty myths debunked

We've gathered up all of the beauty myths YOU were curious about and now we have answers! Beauty expert, Lauren Zeifman, came to our studio to separate fact from fiction. Can your cell phone make you break out? Does shaving make your hair grow back thicker? Does lack of sleep make you gain weight? Watch our episode to find out.

It's hard to know what's true when it comes to beauty myths because some— even the scary ones— sound reasonable. Lauren Zeifman, an NYC- based cosmetic dermatology practitioner, helped us uncover the truth. Some of the questions and much needed answers are below. All I can say is, I will never look at my cell phone the same way again.

Q: Is it true that 8 hours of sleep can help me lose weight?
A: Yes! When you don't get enough sleep, your brain produces cortisol, also known as the "stress" hormone, which tells your body to store fat.

Q: Can holding a cell phone against your face make you break out?
A: Yes. Our cell phones are breeding grounds for germs, even more than doorknobs and toilet seats. Remember to wipe your phone down often.

Q: I've heard I don't have to use anti-aging cream until I'm over 30. Is that true?
A: You are never too young to incorporate anti-aging products into your regimen. A daily application of sunscreen is extremely important. Over the counter creams with retinol, which helps with cell renewal, do a lot of good.

Q: Does shaving make hair grow back thicker?
A: It does not. It may feel like it does because the new hair has a blunt feel.

Do you have any other questions for Lauren? Post on our Facebook wall with what you question is, and we'll get you answers.