Your regular update for technical and industry information

Your regular update for technical and industry information

USA: California moves to limit the use of Proposition 65 short-form warning


On 8 January 2021, the California Office of Environmental Health Hazard Assessment (OEHHA) issued a notice of proposed rulemaking1 significantly restrict the use of the short-form warning as a safe harbour under Proposition 65. Comments to the Agency are due by 29 March 2021.

The short-form option is currently permitted2 for use without regard to the package size or available labelling space. However, there has been a widespread use of short-form warnings in ways that were not intended and do not further the purposes of Proposition 65. 

The amendments would change the content of the warnings and the method of use. The changes are meant to make short-form warning less appealing to business, to drive identification of Proposition 65-listed chemicals in the warning, and to discourage “over-warning”.

The proposed regulation makes the following changes:

  • Limiting the use of the short-form warning, only allows its use on products with 5 square inches or less of label space, and the package shape or size cannot accommodate the full-length warning. (The provision retains the requirement that the short-form warning type size be no smaller than “the largest type size used for other consumer information on the product”, and no smaller than 6-point type.)
  • Eliminating short-form warnings in internet and catalogues, if the product carries such warnings.
  • Requiring at least one chemical to be included in the warning.
  • Clarifying how short-form warnings can be used for food products.

Currently, short-form warnings for consumer products look like:

Caution_symbol WARNING: Cancer –

Caution_symbol WARNING: Reproductive Harm -

Caution_symbol WARNING: Cancer and Reproductive Harm -

If the proposed regulation is finalised, the new short-form warnings would be:

Caution_symbol WARNING: Cancer risk from [Name of one or more chemicals known to cause cancer] Exposure –

Caution_symbol WARNING: Risk of Reproductive Harm from [Name of one or more chemicals known to cause reproductive toxicity] Exposure –

Caution_symbol WARNING: Risk of Cancer and Reproductive Harm from [Name of one or more chemicals known to cause cancer and reproductive toxicity] Exposure –

For businesses that choose to use the modified short-form warning, OEHHA has proposed the regulation to become operative one year after the effective date of the amendments. Any product that is manufactured within that one-year window and bears the “old” short-form warning would be allowed to sell through for an indefinite period.


[1]  Notice of Proposed Rule-making

[2]  OEHHA sample warnings and translations

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