The photo sharing app is adding security measures to prevent adults from texting teenagers directly if they want to.
Under the new security system, if a teenager follows an adult, he or she will only be able to send a direct message. However, the correct age must be given in the account to get the benefit.
According to a BBC report, teenagers often raise their age on Instagram to avoid the ban. Many times child abusers also keep their age low on the platform.
"New artificial intelligence technology and machine learning technology" are being developed to tackle age-related challenges, Instagram said. This will help account holders to provide accurate information about age.
Currently, users have to be at least 13 years old to use Instagram. Instagram gives young people the option to keep their account 'private' as soon as they open it. If kept private, no other user will be able to view their account photos without the permission of the young account holder.
"If the teen doesn't sign up privately at the time of sign-up, we'll send them a notification later, mentioning the benefits of a personal account and reminding them to go to settings." - wrote in a blog post Instagram.
In January, Instagram rival TickTock announced that users under the age of 18 would have "by-default" private accounts on their platform.
Tickets can be used by 13-15 year olds to approve 'friends' for comments and to decide if the video is open to the public.
The UK's proposed "Online Harm Bill" will give regulators the power to block online services if they fail to ensure the safety of children. But it may take until 2022 for the bill to become law.