This feature is only available in some areas.
An
end-to-end encrypted chat on Instagram is intended just for you and the person you’re talking to. Note that this is only available in chats with one other account.
Tap

or

in the top right of Feed.
- Tap
in the top right. - Tap
next to Start end-to-end-encrypted chat. - Select the account you want to start an end-to-end encrypted chat with or search for their name at the top.
- Tap Chat in the top right.
You’ll see

on chats that are end-to-end encrypted. Any other conversations you have with that account will appear as a separate chat in your Chats list.