Millions of users of Meta products, including Facebook and Instagram, are to receive notifications of the firm's updated privacy policies.
Meta says the changes are designed to make it easier to understand how customers' information is used.
The company has previously been criticised by regulators and campaigners over its use of customers' data.
WhatsApp and some other products are not covered by the update.
Meta says the changes won't allow it to "collect, use or share your data in new ways".
There are, however, two changes to the way that users can control how their information is processed.
A new setting will give people more control over who can see their posts by default. And existing controls over which adverts users can see are consolidated into a single interface.
The company is also updating its terms of service.
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