P&S Defender SiO2: Pro-Grade Ceramic Protection in a Spray Bottle
P&S Defender SiO2 Protectant is a spray-on ceramic sealant that delivers professional-grade SiO2 chemistry without the prep work, curing time or price tag of a traditional ceramic coating installation. Engineered to bond to paint, glass, wheels and trim, it creates a slick, hydrophobic, UV-resistant protective layer that lasts up to 12 months between applications.
Where polymer sealants and waxes give you weeks of protection, Defender SiO2 builds a real silicon dioxide layer that resists chemical contamination, makes maintenance washes faster and keeps paint feeling glass-smooth. Apply over cleaned paint in 30 minutes. Apply over an existing ceramic coating to extend its life and refresh hydrophobic behavior.
Why Detailers Trust Defender SiO2
- Real SiO2 chemistry: not a polymer sealant. Silicon dioxide bonds to the clear coat for genuine ceramic-grade protection.
- Up to 12 months durability: two to three times longer than typical sealants and waxes, depending on wash frequency and exposure.
- Multi-surface: safe on clear coat paint, glass, wheels, plastic trim, chrome and headlights.
- Topper-compatible: use over existing professional ceramic coatings to refresh hydrophobic performance every 3 to 6 months.
- 30-minute application: no IPA prep, no panel-by-panel curing, no booth conditions. Spray on, wipe in, buff to a high gloss.
- Made in USA: P&S Detail Products, Renny Doyle Double Black Collection.
How to Use P&S Defender SiO2
Application on cleaned paint (full coverage):
- Wash and dry the vehicle thoroughly. The paint must be free of wax, polish or sealant residue for optimal bonding.
- For maximum durability, use an alcohol-based panel prep wipe (or P&S Paint Cooling Surface Prep) to fully decontaminate the surface.
- Work in the shade on a cool panel. Spray Defender directly onto a clean microfiber applicator pad, 2 to 3 sprays per panel.
- Spread the product evenly across one panel using straight passes, applying a thin uniform layer.
- Wait 30 to 60 seconds for the product to flash. You will see a slight rainbow haze appear.
- Buff to a high gloss with a clean, plush microfiber towel using straight passes.
- Continue panel-by-panel until the entire vehicle is coated.
- Allow 1 to 4 hours of cure time before water exposure. Avoid washing for 24 hours.
Application as a topper on existing ceramic coating:
- Wash and dry the vehicle. No panel prep needed.
- Spray Defender directly onto the paint surface or onto a microfiber towel, 2 to 3 sprays per panel.
- Spread evenly with a microfiber applicator.
- Buff to a high gloss with a clean towel.
- Reapply every 3 to 6 months to keep your ceramic coating performing at peak hydrophobic levels.
Pro tip: apply Defender every other wash on a maintenance schedule. Hydrophobic behavior, water sheeting and gloss will stay strong for months longer than waxing.
Important: never apply in direct sunlight or on a hot panel. Surface temperature should be below 30 °C.
Product Specifications
- Type: spray-on SiO2 ceramic sealant
- Chemistry: silicon dioxide (SiO2), pH-neutral
- Form: ready to use spray
- Surfaces: clear coat paint, single-stage paint, glass, wheels (all finishes), plastic trim, chrome, headlights
- Durability: up to 12 months on cleaned paint, 3 to 6 months as a topper over existing ceramic coatings
- Cure time: 1 to 4 hours, full water-resistant cure within 24 hours
- Coverage: a 473ml bottle treats roughly 4 to 6 full vehicles
- Available sizes: 473ml (16oz spray), 3800ml (1 gallon refill)
- Made in: USA, by Appearance Technology Group (ATG)
- Brand line: P&S Detail Products, Renny Doyle Double Black Collection
Frequently Asked Questions
What is the difference between SiO2 spray sealant and a real ceramic coating?
A professional ceramic coating (like Gtechniq, Gyeon, Ceramic Pro) is a thicker silicon dioxide layer applied in a controlled environment, lasting 2 to 5 years. Defender SiO2 is a thinner, sprayable version of the same chemistry, lasting up to 12 months. It is the same active ingredient at a more accessible price and easier application.
Is Defender SiO2 better than wax or polymer sealant?
Yes, in terms of durability and chemical resistance. Wax lasts 2 to 3 months and is removed by alkaline cleaners. Polymer sealants like Bead Maker last 8 to 12 weeks. Defender SiO2 lasts up to 12 months and resists chemical degradation from acid rain, bird droppings and harsh detergents.
Can I use Defender SiO2 over my existing professional ceramic coating?
Yes, this is one of its primary use cases. Apply every 3 to 6 months as a topper to refresh hydrophobic behavior and extend the life of the underlying coating.
How do I prepare paint for maximum Defender durability?
Wash thoroughly, decontaminate with Iron Buster, clay bar any remaining bonded contamination, then wipe down with an alcohol-based panel prep. This creates a chemically clean surface for the SiO2 to bond to the clear coat.
Will Defender SiO2 enhance gloss on dark paint?
Yes. The SiO2 layer creates a glass-smooth surface that amplifies depth and reflectivity, especially noticeable on dark colors. Pair with proper paint correction for maximum gloss.
How often should I top up Defender on a maintenance schedule?
For a vehicle in daily use, every 2 to 3 months keeps hydrophobic behavior at peak levels. For a garage-kept weekend car, every 4 to 6 months is plenty.
Where is P&S made?
P&S Detail Products is manufactured in the USA by Appearance Technology Group (ATG). The Rag Company Europe is the official European distributor.