Prop 65
Last updated September 3, 2026
California requires businesses to warn people about products containing certain chemicals. HOKU does not contain any of them, so it carries no Proposition 65 warning.
What Proposition 65 is
It is a California law from 1986. The state keeps a list of chemicals it has identified as causing cancer, birth defects, or other reproductive harm. If a product exposes someone in California to one of those chemicals above a set level, the seller has to say so on the label or the listing.
The warning does not mean a product is unsafe or illegal. It means a listed chemical is present. The list currently runs to roughly 900 chemicals and is updated through the year.
What is in HOKU
Complete ingredients
- Water (Aqua)
- Sodium chloride — table salt
- Hypochlorous acid — made by running an electric current through the salt water
Nothing else. No alcohol, no fragrance, no oils, no preservatives, no colorants.
Where that leaves us
We checked all three ingredients against California's current list. None of them appears on it. HOKU therefore requires no Proposition 65 warning, and you will not find one on the can or in our listings.
We re-check whenever the state updates the list, and if that ever changes we will add the warning and say so here.
One thing that is not a Proposition 65 matter. HOKU comes in a pressurized can, which carries its own safety warnings — do not puncture or incinerate it, and do not store it above 120 °F. Those are federal aerosol rules, unrelated to this page. They are printed on the can and listed on the product information page.
Read it yourself
California publishes the list and an explanation of the law at oehha.ca.gov and p65warnings.ca.gov. Both are free and public.
Contact
If you have a question about what is in the product, ask us directly at hello@hoku-clean.com. We will answer with specifics.