Instagram is introducing separate teen accounts for those under 18 as it tries to make the platform safer for children amid a growing backlash against how social media affects young people's lives.

Beginning Tuesday in the U.S., U.K., Canada and Australia, anyone under under 18 who signs up for Instagram will be placed into a teen account and those with existing accounts will be migrated over the next 60 days. Teens in the European Union will see their accounts adjusted later this year.