Gtechniq Auto W1 GWash Car Shampoo 1L Concentrate — pH-Neutral, Biodegradable Foam with Pink Grapefruit

Gtechniq Auto W1 GWash is a high-foaming, biodegradable car shampoo that safely lifts dirt and grime while preserving waxes and coatings.

Designed by Gtechniq, a leader in surface science, this 1L concentrated car shampoo delivers a thick foam that lubricates contaminants and helps release bonded dirt without harsh chemicals. It rinses clean, leaves a fresh pink grapefruit scent, and is pH-neutral so it won't strip paint sealants, ceramic coatings, or wax layers. Suitable for routine maintenance or fuller detail washes, Auto W1 is formulated to be effective yet gentle on vehicle finishes and the environment.

How does Auto W1 remove dirt without damaging paintwork?

Auto W1 uses high-foaming agents that encapsulate and suspend dirt particles, reducing the risk of scratching when you wipe or mitt the surface. It also contains formulation elements that weaken the bond between grime and paint, allowing contaminants to rinse away more easily.

• Creates a slick foam layer to lubricate dirt during washing
• Chemically breaks bonds that hold soil to paintwork
• pH-neutral formula avoids stripping protective sealants or wax

Is this shampoo safe for ceramic coatings, waxes and the environment?

Yes — the Auto W1 blend is non-acidic, non-toxic and pH-neutral, so it cleans effectively without degrading most modern protective layers. Its biodegradable formulation means it breaks down naturally, making it a better choice for environmentally conscious users.

• Formulated not to remove sealants, ceramic coatings or car waxes
• 100% biodegradable surfactants for reduced environmental impact
• Non-corrosive and gentle on exterior trims and finishes

How do I use the Gtechniq Auto W1 for best results?

Mix a measured amount of the concentrate into a bucket of water, apply from the top down using a soft wash mitt, then rinse thoroughly with clean water. For heavily soiled areas, allow a short dwell time before agitation, but avoid drying on the surface in direct sun.

• Recommended dilution: follow label guidance for wash buckets or foaming lances
• Wash top-to-bottom with a clean wash mitt to prevent cross-contamination
• Rinse fully and dry to reveal a high-shine finish

What fragrance and bottle size does this product come in?

Auto W1 is supplied in a 1-litre concentrated bottle and is scented with a refreshing pink grapefruit aroma that leaves a subtle, pleasant smell after rinsing. The concentration allows multiple washes per bottle, depending on dilution and vehicle size.

• 1L concentrated bottle for multiple washes
• Pink grapefruit fragrance for a fresh-smelling finish
• Clear instructions on dilution to maximize value and performance

Who is this for? Gtechniq Auto W1 GWash is aimed at car owners and detailers who want an effective, safe and eco-friendly shampoo that protects existing wax and coatings while delivering showroom-like shine. It suits daily drivers, weekend restoration projects and professional valeting operations where paint and protection need to be preserved. If you prioritize low-abrasion cleaning, biodegradable ingredients, and a pleasant scent during washing, Auto W1 is a practical addition to your car care kit.