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Gwen Stefani's rockin' 5-year-old, Kingston, was spotted yesterday sporting a bright blue mohawk which, personally, I find to be absolutely adorable. My friend (who has a 6-year-old), however, gasped at the sight of the image. "Chemically-processing a child's hair is abuse!," she says, adding "Same goes for pets."

How young is too young to color hair, in your opinion? Should it be up to the parents, or should salons refuse service to minors under a certain age?