Listen, Ariel probably rubbed kelp all over your face and hair and that little mermaid has not aged ONE DAY. If you’ve ever been to the beach, chances are you’re already familiar with kelp. Maybe you accidentally stepped in a pile of the stuff during a stroll on the beach, or nudged some out of the way to make space for your towel, or jumped when some brushed against your leg while wading, or swam amongst it during a particularly…