Koch Chemie Gentle Snow Foam (GSF) is a high-foaming, pH-neutral snow foam concentrate designed for safe pre-washing and contact washing of all vehicle types. The thick, stable foam blanket clings to panels and provides extended dwell time, loosening and encapsulating dirt, road film, and grime so it can be rinsed cleanly away without aggressive scrubbing that risks scratching paint.

Completely safe on wax, paint sealants, and ceramic coatings, making it the ideal maintenance wash soap for coated vehicles where preserving the protection layer matters. For extra cleaning power on heavily contaminated vehicles or stubborn insect splatter, mix it with Koch Chemie Green Star APC for an active foam pre-wash that really bites into the grime.

If you are looking for the best snow foam for ceramic-coated cars, a pH-neutral foam cannon soap that is safe on all paint protection products, or a professional pre-wash snow foam from Koch Chemie for high-quality detailing results, GSF is one of the most trusted snow foam products used by professional detailers worldwide. Available in 1L and 5L.

Koch Chemie GSF Dilution & Usage

Gentle Snow Foam (GSF) is Koch Chemie's pH-neutral pre-wash and snow foam — specifically engineered to safely pre-wash ceramic-coated and sealed paint without stripping protection.

• Foam cannon (standard): 1:20 to 1:50 dilution
• Pre-wash pump sprayer: 1:20 direct-spray
• Maintenance on coated paint: 1:50 is plenty

pH: Neutral (~7). Ceramic-coating safe: Yes. GSF is the pre-wash of choice for shops maintaining ceramic-coated fleets.

See the full Koch Chemie dilution chart.

Frequently Asked Questions

Is Koch Chemie GSF pH neutral?

Yes. Gentle Snow Foam is formulated to be pH-neutral (~7) — that's exactly what lets it pre-wash ceramic-coated and sealed vehicles without stripping the protection.

Is Koch Chemie GSF a pre wash?

Yes. GSF is designed as a pH-neutral pre-wash specifically for ceramic coatings and sealed paint. Foam onto a dry or pre-rinsed vehicle, dwell 1-3 minutes, rinse, then proceed to contact wash.

Koch Chemie GSF vs Active Foam — what's the difference?

GSF is pH-neutral and safe on ceramic coatings — use it for maintenance pre-wash on coated cars. Active Foam is alkaline and more aggressive — use it on heavily soiled, non-coated vehicles. Many shops stock both and choose based on the car in front of them.

What's the best GSF dilution ratio for a foam cannon?

1:20 for visibly dirty cars, 1:50 for maintenance washes on coated vehicles. Both produce dense foam; the 1:50 is gentler on the coating and more economical per wash.

Will Koch Chemie GSF strip wax or ceramic coating?

No. GSF is pH-neutral and solvent-free, specifically formulated not to strip wax, sealant, or ceramic coatings. It's the pre-wash Koch Chemie recommends for protected paint.

Buying for a shop? See our Koch Chemie wholesale program for B2B pricing on Koch Chemie Gentle Snow Foam (GSF) and the full Koch Chemie lineup.