Hair Trend The 70s Hair Band. The 70s hair band is a very popular hair trend and its one that I love. The hair band is a very popular hair accessory that can be worn with many different looks and outfits. Many hippies used to love this look back in the day and they were a favorite on the runway. They can also hold your bangs in place for a edgy and sexy vibe. You can make your own headband by purchasing a elastic one from Walgreens or CVS. Forever 21 also has some fun glittery ones.