It will let parents link their own TikTok accounts to their child's - and turn features on and off remotely.
That includes a "restricted mode" that tries to filter out inappropriate content, and turning off messaging.
TikTok has an age limit of 13, but many pre-teens still use the Chinese-owned app.
A recent survey by UK media regulator Ofcom found that TikTok was used by 13% of all children aged 12-15 in 2019 - up from 8% the year before.
What does the new feature do?