Hair accessories are items that are used to adorn or style hair. They can be functional, such as holding hair in place, or decorative, adding an extra touch of style to a hairstyle. There are many different types of hair accessories available, including:

1. Hairbands and headbands: These are bands worn around the head to keep hair in place or add a decorative touch.

2. Hair clips and barrettes: These are small clips or clasps used to hold sections of hair in place.

3. Hair ties and scrunchies: These are elastic bands used to tie hair back into a ponytail, bun, or other style.

4. Hair pins and bobby pins: These are small, U-shaped pins used to hold hair in place, particularly for updos and more intricate hairstyles.

5. Hair combs and brushes: These are used to detangle hair, add volume, or style hair in a particular way.

6. Hats and caps: These are headwear items that can be worn for both practical and fashion purposes, covering hair and protecting it from the sun.

Hair accessories come in a variety of materials, colors, and designs, and can be used to add a personal touch to any hairstyle.