What the c_user cookie does
Used in conjunction with the xs cookie to authenticate your identity to Facebook. Contents: User ID
Who sets it
Consent category: marketing
Marketing cookies follow visitors across sites to build advertising profiles and to measure campaigns. They always require prior consent, and a consent banner has to block them until the visitor agrees.
| Name | c_user |
|---|---|
| Category | Marketing |
| Lifetime | 90 days |
| Set by |
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From the Conzent cookie database, last updated 2026-10-10. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.