Yes, Challenge submissions can be hidden like other images from your Picsart profile tab.
To hide a challenge submission from your Profile tab:
- Tap to go to your Profile tab.
- Select the image you want to hide.
- Tap the in the top right corner of your screen.
- Tap Hide from Profile.
To restore a hidden image back to your Profile tab:
- Select the image you'd like to restore.
- Tap to go to your Profile tab.
- Tap on Collections in the top right corner of your screen.
- Select the Public Posts folder.
- Tap the in the top right corner and tap Move to Profile.