DANRUO Touchless Pre-Wash

A touchless pre-wash for the first step of your wash: mix with water, cover the whole car using foam equipment, and rinse it off once the dirt has softened. This cuts down on the scratches that scrubbing leaves behind.

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Product description

More scratches every time you wash, tree sap from parking under a tree, dried bird droppings that won't scrub off — usually it's because dust and grit are still stuck to the paint when you start scrubbing. DANRUO Touchless Pre-Wash is the first step of the wash: mix with water, spray it over the whole car with foam equipment, let it soften the dirt that's clinging on, then rinse it off with a pressure washer. A light pass with a soft brush during rinsing is all you need, no hard wiping. The formula has no added sodium hydroxide, and it can be used on paint, PPF, color-change wraps, glass, plastic trim, wheels, and the engine bay.

Specs

What's included: Deionized water, high-molecular-weight polymers, nonionic surfactants, penetrants, and more
Compatible surfaces: Paint, PPF, color-change wraps, glass, plastic trim, wheels, the engine bay, and most other exterior surfaces
Dilution ratio: Varies a lot by equipment (PA foam lance / pump foam sprayer / spray bottle). Follow the label, or WhatsApp us to confirm the ratio for your setup.

Things to know

This product does not contain sodium hydroxide.
For uncertain reactive metal surfaces like aftermarket wheels, aftermarket brakes, or anodized aluminum, always dilute more before applying: 1:15 or weaker in a PA foam lance, 1:150 or weaker in a pump foam sprayer.
For materials you're unsure about, or aged aftermarket parts, always run a small compatibility test first.
Use it below 40°C. We have no data above 40°C, so we can't guarantee results there.
Don't let the concentrate or foam sit and dry on the body in strong heat and sun — it makes rinsing harder.
A light pass with a soft brush during rinsing is enough. Don't scrub hard, or you risk scratching the surface.
When mixing, add water first, then pour in the product.
From the bottle label's Precautions section: may be harmful if swallowed; may cause eye irritation if splashed in the eyes; keep out of reach of children; if it contacts eyes or skin, flush immediately with plenty of water; do not apply in high-heat conditions; do not store in the car long-term in sun or heat.
Wear gloves and keep the area ventilated while applying. Don't mix with other chemicals.

FAQ

Yes, but follow the precautions: for uncertain metal surfaces like anodized parts, chrome-plated parts, or aftermarket wheels, always dilute more (1:15 or weaker in a PA foam lance, 1:150 or weaker in a pump foam sprayer), and test on a small hidden area first. Only treat the whole car once you see no issues.

No. That's the whole point of a touchless pre-wash — spray it on, let it sit and loosen the dirt on its own, then rinse it off with a pressure washer. No contact scrubbing needed at all, which avoids the fine scratches scrubbing causes in the first place.

Adjust based on how dirty the car is. We generally recommend 1:3 to 1:10 (concentrate:water). Use a stronger mix for heavy dirt or a car that hasn't been washed in a while, and a weaker mix for routine upkeep.

Yes. DANRUO Pre-Wash works well with a foam sprayer for more even coverage, especially for pre-washing SUVs or other large vehicles.

Yes. Apply it to the motorcycle's body and wheels the same way as a car. For aftermarket, anodized, or chrome-plated parts, follow the same precautions — dilute more and test on a small hidden area first.

Application guide

The full wash process: 8 steps