Tweens are hooked on skin care. Is it harming their skin? (Getty Images) "Social media and trends play a large role," Dr. Nava Greenfield, a dermatologist at Schweiger Dermatology Group, tells Yahoo ...

Add Yahoo as a preferred source to see more of our stories on Google. Tween girls love stuff. And not just run-of-the-mill stuff, but fun and trendy goods that are cute and cool and jazzy, just like ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Being a pre-teen is tough. From dealing with ...