When you block someone from commenting, they can still view your photos and videos. Any new comments from them won’t be visible to anyone else except for them.
To block someone from commenting on your photos and videos:

Instagram app for Android and iPhone and Instagram Lite app for Android
Tap

or your profile picture in the bottom right to go to your profile.
Tap

in the top right, then tap
Settings.
- Tap Privacy, then tap Comments.
- Next to Block comments from, tap People.
- Enter the name of the person you want to block, then tap Block next to their name.
To unblock someone from commenting on your photos and videos, tap Unblock next to their name and then tap Unblock again to confirm.
Keep in mind that when you block someone from commenting, it doesn't remove their previous comments. Learn more about
blocking people.