Windscreen had water spot etching from parking under a tree for months. Glass Compound Z cleared it in two passes on a DA - the optical clarity afterwards was noticeably better, especially at night with oncoming lights. Followed up with a glass sealant and it's been clean ever since.
Soft99 Glass Compound Z (100ml)
- Dedicated compound for automotive glass surfaces
- Removes water spots, mineral etching and light scratches
- No oily residue zero smear or glare risk
- Ideal prep before glass sealant or ceramic glass coating
- Restores optical clarity to hazed or etched glass
- Fine abrasive cuts water spots without smear or glare
- Machine or hand applicable - ready for coating prep
- Free shippingOn orders over R1000
- Fast delivery2-4 business days
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Total price R 2,385.00
Glass Correction
Clarity where paint compounds fall short
Paint compounds leave oily residue on glass that smears under lights and compromises the bond of any sealant you apply over it. Glass Compound Z uses a fine abrasive calibrated for glass hardness - cutting through water spot etching, mineral deposits and haze, then buffing off clean with zero residue and no glare risk.
Why Glass Compound Z
Built for glass. Not borrowed from paint.
Four reasons professional detailers reach for a dedicated glass compound.
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Glass-Specific Formula
Abrasive chemistry calibrated for glass hardness - not repurposed from a paint compound.
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True Optical Clarity
Cuts water spot etching and mineral haze to restore clear, undistorted visibility.
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Residue-Free Finish
Buffs off clean with no oily film, no smear and no glare under direct lighting.
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Coating-Ready Surface
Leaves glass correctly prepped for sealant, rain repellent or ceramic glass coating.
Glass Compound Z vs Generic
Purpose-built beats repurposed
Using a paint compound on glass is a common shortcut. Here's how Glass Compound Z stacks up against that approach and cheaper generic alternatives.
| Feature | DetailerSA | Alternative |
|---|---|---|
| Formulated specifically for glass surfaces | Yes | No |
| No oily residue after buffing | Yes | No |
| Machine and hand application compatible | Yes | Yes |
| Removes water spot etching and mineral deposits | Yes | Yes |
| Safe to use before glass sealant or ceramic coating | Yes | No |
| Suitable for deep or structural glass scratches | No | No |
The Right Prep Step
Set the foundation for glass coating
Whether you're laying down a ceramic glass coating or a traditional rain repellent, the result is only as good as the surface underneath. Glass Compound Z removes the contamination and micro-scratching that compromise adhesion and clarity, leaving a clean, corrected surface ready to bond properly with whatever protection you apply next.
Reviews
What our customers say
Good product for prep work before applying a glass coating. Takes a little elbow grease on stubborn spots but buffs off cleanly with no smearing - which is more than I can say for some paint compounds I've tried on glass.
Questions
Frequently asked
Can I use Glass Compound Z on painted surfaces?
No. Glass Compound Z is formulated specifically for automotive glass surfaces. Its abrasive chemistry is calibrated for glass hardness, not paint. Use a dedicated paint correction compound on painted panels.
Is it safe to use with a DA polisher or rotary machine?
Yes. Glass Compound Z is compatible with both machine and hand application. When using a machine, pair it with a dedicated glass polishing pad and work at a moderate speed to keep heat build-up in check on the glass surface.
What pad should I use with Glass Compound Z?
A damp glass polishing pad is ideal for machine use. For hand application, a damp microfibre applicator or a foam applicator block works well. Avoid wool or heavy cutting pads - the compound's fine abrasive does the work.
Will it remove deep scratches from glass?
Glass Compound Z is designed for water spot etching, mineral deposits, haze and light surface scratches. Deep glass scratches - the kind you can feel with a fingernail - are typically beyond the reach of any polishing compound and would require professional glass restoration or replacement.
Does it leave any residue on the glass after buffing?
No. Unlike paint compounds used on glass, Glass Compound Z is specifically formulated not to leave an oily residue. Buff off with a clean, dry microfibre cloth and the glass should be clear, residue-free and ready for a sealant or coating.
Do I need to apply a glass sealant or coating after using it?
The compound itself does not add any protection or water-repellency - it corrects the glass surface. For lasting clarity and hydrophobic performance, follow up with a glass sealant, rain repellent or ceramic glass coating. Glass Compound Z leaves the surface in ideal condition for that next step.
How much product do I need per windscreen?
A small amount goes a long way. For a standard windscreen, a pea-sized to marble-sized amount per section is typically sufficient. Work in manageable sections rather than applying product across the whole glass at once for the most controlled result.
Can Glass Compound Z be used on plastic or polycarbonate headlight lenses?
Glass Compound Z is formulated and tested for automotive glass. Plastic and polycarbonate headlight lenses have different hardness characteristics, and a dedicated plastic or headlight restoration compound is the correct tool for those surfaces. Using a glass compound on plastics may not deliver the expected result.