Governor Newsom signed SB 1050 on September 16. Starting January 1, 2027, any ad that features an AI-generated performer in a prominent role and runs in California must carry a clear disclosure. California joins New York as the second state to mandate this. But unlike New York's more narrowly scoped version, SB 1050 covers both visual and audio-only ads — meaning AI voiceovers that deliver your product pitch are in scope, not just digital human faces.
What the law actually covers
SB 1050 defines a "synthetic performer" as an AI-generated figure, voice, or representation that creates a realistic impression of a human performance but depicts no identifiable real person. The disclosure obligation is triggered when that synthetic performer appears in the foreground to demonstrate a product, delivers the primary commercial message, or functions as a testimonial.
A digital skyline in your brand video doesn't trigger it. An AI voice saying "I struggled with dry skin until I tried this" does. A computer-generated presenter walking through your product benefits does.
The required disclosure language is either "This performance features a synthetic performer" or "No human performer is depicted." It must be clear and conspicuous — not hidden in a tooltip, not buried in legal copy at the bottom of the screen.
Who's actually in scope
If you're selling to US consumers, you're selling to California. Any ad that serves with California geo-targeting — on Meta, TikTok, YouTube, Google, CTV, or any other channel — is covered by this law.
The creative formats most affected:
- AI avatar UGC video (Meta is actively expanding these into Advantage+ Creative for all e-commerce accounts)
- TikTok Seedance clips featuring AI-generated presenters
- AI voiceover ads without a human performer on screen
- ChatGPT Ads or AppLovin creative generated from product images with AI people
- Any production from third-party AI UGC shops where you may not know what went into the final asset
That last category is the quiet risk. If you buy AI UGC from a vendor and that vendor uses a synthetic performer to deliver your testimonial, the disclosure obligation sits with you as the advertiser, not the vendor.
Why this one has actual bite
California's law enforces through the Unfair Competition Law (Business & Professions Code § 17200) — which gives private plaintiffs standing. Any California resident who sees your ad without the required disclosure can bring a claim. You're not waiting for a regulator to investigate; your own customers can file.
That's a meaningful difference from the EU AI Act Article 50 enforcement that activated in August, which requires a regulatory body to act. The FTC's disclosure framework is still in draft form. California is going ahead.
New York's version, which Amazon updated its product image requirements for in August, was focused primarily on photorealistic AI images in product listings. SB 1050 goes further: it captures audio-only ads with AI voices, and it applies to advertising across every medium.
The window you have
You have three and a half months. That's not a lot of runway for a production and compliance audit if you're running volume across Meta, TikTok, and CTV simultaneously.
Four things to do before December:
- Pull an inventory of active creative. Flag every video or audio asset featuring a realistic human performance that you haven't confirmed uses a real person.
- Check what your AI UGC vendors are producing. Ask them directly whether their assets use synthetic performers and whether they deliver disclosure-ready variants.
- Add "This performance features a synthetic performer" as a standard deliverable in your creative brief template when AI performers are involved.
- Review your geo-targeting setup. National campaigns run in California. Manage compliance at the asset level, not by trying to exclude the state.
The compliance problem is operational, not technical. Adding the disclosure text to an ad takes minutes. Auditing six months of creative and updating vendor agreements takes weeks.
If you want a fast read on where your account stands heading into Q4, the free audit at gromerce.com/audit surfaces tracking gaps and compliance blind spots in around three minutes.
California law, effective January 1. The ad you're running right now may already need a label.
Sources: Bloomberg Law, September 2026
