P&S Detail Products Absolute Rinseless Wash

Mix one ounce of concentrate per two gallons of water in a clean wash bucket. Dunk a plush microfiber mitt or wash pad, wring it out so it's saturated but not dripping, and wipe a single panel at a time from the top down. Immediately follow with a separate plush microfiber towel to buff the panel dry — do not let the surface air-dry. Rotate to a clean towel face for each new panel. For heavier soil on lower panels, P&S recommends pre-treating with the same 1:256 dilution in a pump sprayer before the mitt pass. One gallon of concentrate makes 256 gallons of wash solution.

Same category, different formulas. All three target the bucket-style rinseless workflow on lightly soiled paint at the same 1:256 dilution, but each brand uses its own slip and encapsulation chemistry — ONR is the long-standing category benchmark with a much larger community track record (over 9,000 Amazon reviews and years of dark-paint scratch-test threads), McKee's N-914 keeps more of its formula proprietary, and Absolute is a newer entry from a respected pro-supply brand. Community evidence for Absolute is thinner — 219 Amazon reviews — so the dark-paint scratch-test corpus that anchors ONR doesn't yet exist here. Pick by brand preference and what's easy to source locally.

Because rinseless wash is scored at the working-solution dilution. The concentrate's SDS §2 codes (H319 eye, H315 skin) apply at concentrate strength — but at 1:256 dilution each named ingredient drops to 0.002–0.012%, well below the mixture-classification thresholds where H319 and H315 survive. The 8.5 reflects a base of 10.0 minus the W1 signal-word cap (the concentrate signal word is WARNING, which W1 caps at 8.5). If you handle the concentrate undiluted, treat it as a Cat-2 irritant: safety glasses on, wash hands after.

Not on Amazon as of this scoring round — the only consumer-facing Amazon listing is the 1-gallon F3601 jug. P&S sells F36 in 5-gallon and 55-gallon professional sizes through detail-supply distributors, but no 32 oz or quart retail size is listed. For a smaller first-buy in this category, the 32 oz Optimum No Rinse or 32 oz McKee's N-914 bottles are easier entry points.

The §3 listing is benzyldimethyl(octadecyl)ammonium chloride (CAS 122-19-0) at 0.5–3% in the concentrate — a stearalkonium-type cationic surfactant. Quats are sometimes flagged as skin sensitizers at high concentrations, but the SDS §2 does not classify this product as a sensitizer (no H317) and does not list H334. At the 1:256 working dilution the quat is at 0.002–0.012% in the bucket water — well below any sensitization concern. Sensitive-skin users handling concentrate directly should wear gloves; bucket-water exposure during normal use is not a documented sensitization pathway.