"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Tween skincare—yes, you read that right—has become one of the fastest expanding categories in beauty.

As puberty starts earlier, glossy marketing targeting the 12-and-under set has driven tweens’ annual spending on skincare and beauty to $4.7 billion. For families deciphering what’s necessary and what ...

"Glow-up routines" encourage kids to buy and use lots of beauty products to change how they look. These routines can damage young skin and lead to stress, low self-esteem, and unhealthy habits.