G4 Nanotech Glass Polish
R 524.00
- Removes water spots and hard bonded contaminants
- Nanotechnology formula with citric acid cleaning action
- Will not scratch glass safe for repeated use
- Leaves a clinically clean, streak-free finish
- Nanotechnology and citric acid cut water spots clean
- Streak-free, clinically clear finish on all glass
- Water-based formula - will not scratch glass
- Free shippingOn orders over R1000
- Fast delivery2-4 business days
- Safe paymentEncrypted checkout
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Frequently bought together
Total price R 3,099.00
Nanotechnology cleaning
Water spots and haze - gone without scratching the glass
G4 Nanotech Glass Polish combines citric acid with nanotechnology to cut through the contaminants that ordinary glass cleaners leave behind - water spots, road grime, hazy film and bonded deposits - without any risk of scratching the surface.
Why G4
Professional glass clarity in one step
Built for detailers who need the glass right before protection goes on.
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Citric acid and nanotech
The dual-action formula dissolves mineral deposits and removes hard bonded contaminants other cleaners leave behind.
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Streak-free result
Leaves glass clinically clean with no streaks, no hazing and no residue when buffed with a quality microfibre.
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Will not scratch glass
Water-based and non-abrasive enough to be safe on all automotive glass surfaces even with regular use.
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Coating-ready surface
Preps glass for Gtechniq G1 ClearVision or G5 Water Repellent Coating so protection bonds to a truly clean surface.
G4 vs generic glass cleaner
Not all glass cleaners do the same job
A standard glass cleaner handles fresh dust and smears. G4 is built for the harder work - water spots, bonded grime and pre-coating prep that a spray-and-wipe product simply cannot deliver.
| Feature | DetailerSA | Alternative |
|---|---|---|
| Removes hard bonded water spots | Yes | No |
| Citric acid contaminant removal | Yes | No |
| Safe for repeated use on glass | Yes | Yes |
| Streak-free finish | Yes | Yes |
| Formulated as a coating prep step | Yes | No |
| Will not scratch glass surface | Yes | Yes |
The foundation step
Set your glass up for coating with a clinically clean base
G4 is the decon and prep step your glass needs before any protective coating goes on. Strip the contamination first, get the clinically clear finish G4 leaves, and your G1 ClearVision or G5 Water Repellent Coating bonds to a surface that is genuinely ready.
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Questions
Frequently asked
What surfaces can I use G4 Nanotech Glass Polish on?
G4 is formulated specifically for automotive glass - windscreens, side windows, rear windows and mirrors. Keep it away from plastic and rubber trim, as the source instructions specifically flag these as surfaces to avoid.
Do I need a machine polisher, or can I apply G4 by hand?
G4 is designed for hand application. Apply a small amount to a hand polish pad, work in circular motions until the polish breaks down, then remove residue with a damp microfibre. No machine is required for this product.
How do I remove the residue after polishing?
Gtechniq recommends removing excess residue with a damp MF1 ZeroR Microfibre Buff Cloth. Follow up with G6 Perfect Glass and an MF5 Glass Power Cloth for the clearest final result.
Will G4 work on very heavy water spots or mineral deposits?
The citric acid component targets mineral-based water spots and hard bonded contaminants directly. For extreme etching or deeply pitted glass, multiple passes may be needed, but G4 is built to handle the tough cases that standard glass cleaners cannot shift.
Can I apply a ceramic or water-repellent coating straight after using G4?
Yes - that is exactly what G4 is designed to prepare the glass for. Gtechniq specifically notes it sets the stage for G1 ClearVision Smart Glass and G5 Water Repellent Coating for Glass. Make sure the glass is clean and dry before applying any coating.
Is G4 safe to use in direct sunlight?
No - Gtechniq's usage instructions say to apply out of direct sunlight. Work in a shaded area or indoors to prevent the product drying before you can work it in and buff it off cleanly.
How should I store G4 and how long does it last once opened?
Store G4 in a cool, dry place and use it within 12 months of opening. Shake the bottle well before each use to ensure the formula is properly mixed.
Is G4 safe to use repeatedly on the same glass?
Yes. Because G4 is water-based, it is safe for repeated use on automotive glass without causing damage or degradation to the surface over time.