Myths About Your Skin

(CBS)  When it comes to skin care, perhaps you feel like you know a lot. But when Dr. Mallika Marshall is on hand on The Saturday Early Show, you may find that you don't know as much as you thought.

She is putting co-anchors Gretchen Carlson and Russ Mitchell to the test with such puzzlers as:

Does eating chocolate cause blemishes?

Does drinking water keep your skin moist?

And can toothpaste possibly help get rid of a blemish?

To find out the answers to these and other skin-care questions, take The Early Show quiz.