TikTok is set to raise its minimum age for livestreaming from 16 to 18 from next month.
A BBC News investigation found hundreds of accounts going live from Syrian refugee camps, with children begging for donations.
Some were receiving up to $1,000 (£900) an hour – but when they withdrew the cash, TikTok had taken up to 70%.
In future, only adults would be able to “send virtual gifts or access monetisation features”, TikTok said.
And, “in the coming weeks”, it would let users run adult-only livestreams.
It is unclear how TikTok will enforce these age restrictions, however.
Meta, which owns Facebook and Instagram, and Google, which owns YouTube, have a minimum livestreaming age of 13 and already allow users to age-restrict content they upload.