The best hair bands for keeping your hair in a ponytail can vary depending on your hair type, the thickness of your hair, and personal preferences. Here are some popular options to consider:

1. Hair Elastic Bands: These are the most common and versatile choice for securing ponytails. Look for snag-free or no-metal elastics to prevent hair breakage and damage.

2. Scrunchies: Scrunchies are soft fabric hair ties that are gentle on the hair. They come in various materials and can be a stylish choice while providing a secure hold.

3. Silk or Satin Scrunchies: These are a variation of scrunchies made from silk or satin fabric. They are even more gentle on the hair and can help reduce friction and prevent creases.

4. Coil Hair Ties: Coil hair ties are spiral-shaped bands that provide a strong hold while reducing hair breakage. They are great for thick or heavy hair.

5. Ribbon Hair Ties: These are hair bands made from ribbon material. They can add a decorative touch to your ponytail while keeping your hair secure.

6. Bungee Hair Bands: Bungee bands have hooks at both ends, which make them adjustable and excellent for creating tight, sleek ponytails, especially for longer hair.

7. No-Crease Hair Ties: These hair ties are designed to avoid leaving creases or marks on your hair when you remove them. They are great if you want to change your hairstyle frequently.

8. Snap Clips and Barrettes: These are small hair accessories that can be used in conjunction with hair bands to create stylish ponytails and secure loose strands.

The best choice for you depends on your specific hair type and styling needs. If you have thick or heavy hair, you may want to opt for stronger options like elastic bands or coil ties. If you're concerned about hair damage or creases, silk or satin scrunchies and no-crease ties are good choices. Experiment with different types to see which one works best for you and your hair type while providing a secure hold and comfort.