🇺🇸 California AB 496 adds 26 banned cosmetic ingredients, including Lilial, D4 and styrene
1 Jan 2027 · California, U.S. · Confidence: Official text
What happens
California AB 496 adds 26 ingredients to the state's list of banned cosmetic ingredients, including butylphenyl methylpropional (Lilial), D4 (octamethylcyclotetrasiloxane), styrene and boron compounds, applying from 1 January 2027. It builds on AB 2762, in effect since 1 January 2025, which banned 24 ingredients (11 named substances and 13 PFAS), and AB 2771, which separately bans PFAS as an entire class under a very broad definition (any substance containing at least one fully fluorinated carbon atom). The prohibited activities under current law include holding, so storing non-compliant products in a California warehouse may also be unlawful.
What to do
Brands and manufacturers selling into California should check formulations against the AB 496 additions, and may consider commissioning a third-party testing and certification body to prepare a state-by-state ingredient comparison table.
Source
California AB 496
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