Simoniz Original Paste Wax

Community evidence is thinner than for modern premium waxes, but owner reports and long-term users generally describe the wax holding up for a few months on a daily driver. The brand describes it as 'one of the longest lasting car wax products on the market,' which is a marketing claim the current community data does not independently confirm. The 7 oz tin is also notably small: multiple reviewers note that a single can covers one mid-size car with little left over, which limits real-world long-term testing. Treat the label claim with skepticism and plan to reapply every 2-4 months on a regularly washed daily driver.

Yes. The US product label displays a California Proposition 65 warning listing Naphthalene and Ethylbenzene as chemicals known to cause cancer. Both are trace constituents of the petroleum-solvent carrier used in the formula. The concentrations are below the thresholds that trigger a GHS mixture-level classification (which is why the SDS signal word is WARNING rather than DANGER), but they exceed the Prop 65 reporting threshold, which is a lower bar. If you are in California or prefer to avoid Prop 65-listed chemicals, this is relevant to your purchase decision.

The manufacturer markets it as Brazilian carnauba wax and the brand website describes it as 'pure Brazilian carnauba wax, which is the hardest natural wax known to man.' However, the SDS for the EU-market version lists C9-C11 hydrocarbon (isoalkane) as the dominant ingredient at 60-100% of the formula, with Paraffin wax at 10-30%. Carnauba wax itself carries no GHS classification and does not appear in the SDS §3 hazardous ingredients section. The formula is best described as a carnauba-and-paraffin blend in a petroleum-solvent carrier, not a pure carnauba product.

Multiple community owners note that the 7 oz tin covers roughly one average-size car with little to spare. Simoniz originally sold this wax in much larger quantities, but the current retail packaging is 7 oz only. If you want to wax multiple vehicles or do multiple applications per season, you will need more than one can. The small size is a real practical limitation that affects value for regular use.

The Simoniz formula uses traditional chemistry (petroleum carrier, paraffin, carnauba) that predates modern isoalkane-based synthetic waxes. Modern products like Collinite 476s or Meguiar's Ultimate Paste Wax use more refined carriers with cleaner chemistry profiles and offer better-documented community durability data. Simoniz Original Paste Wax carries a Prop 65 warning that most modern alternatives do not. Its case is primarily nostalgic and historical: for buyers who used it decades ago or want an authentic traditional car wax experience, it delivers. For buyers focused on maximum protection time and chemistry transparency, newer formulations compare favorably.