The hair diffuser is making a comeback for good reasons. If you have wavy or curly hair, you know that taming and styling your hair is no easy feat. There are days when your hair becomes frizzy, dry, tangled and simply a mess. The perfect solution: a hair diffuser. It literally can save curly or wavy-haired girls from a bad hair day. A blow dryer diffuser tames the frizz and volumizes the curls …