“The rule of thumb is to wash after every ten wears,” says Matashi. “If you’re using a lot of product, wash as needed—buildup can dull the hair. Stick to a simple routine: a gentle cleansing shampoo ...

Ciara, master of the hair switch-up, wore the most iconic iteration of the bob hairstyle that, with these blunt, above-the-brow bangs, feels vaguely reminiscent of Michelle Pfeiffer in Scarface. Kelly ...