CARPRO HydrO2 Silica Spray Sealant 500ml
- Spray on, rinse off silica sealant
- 1 part to 6 parts water dilution
- 30ml per average 4 door vehicle
- Paint, glass, trim, wheels, calipers, jambs
- UV protection, water repellent
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A concentrated silica sealant that goes on with a sprayer and rinses off, coating even calipers and wheel wells. It is a sealant layer, not a cleaner, so the car must be washed first.
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ASIN: B00FQN556AModel: HydrO2Category: Car Waxes
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Overview
Not a rub-on wax, this CarPro sealant is sprayed onto a wet car and rinsed off with water. Contact with water triggers a chemical change that leaves surfaces hydrophobic and protected from UV.
Rinse-off application reaches spots a towel never touches, from wheel wells to door jambs. Durability is not quantified, so plan to repeat it as beading fades.
Who it's for
Detailers and owners who wash regularly and want quick protection on every surface suit it. People wanting multi-year protection should look at a ceramic coating.
Pros and cons
- No buffing or wiping
- Coats hard-to-reach areas
- Strong water repellency
- Durability not quantified
- Needs a clean car first
- Must be diluted correctly
Performance notes
The silica layer bonds as water hits it, flipping the surface from water-attracting to water-repelling. Coverage depends on even spraying across every panel before rinsing.
Specifications
| Brand | Carpro |
|---|---|
| Model | HydrO2 |
| Item Form | Concentrated liquid |
| Dilution | 1 part to 6 parts water |
| Usage | 30ml per average 4 door vehicle |
| Surface Recommendation | Paint, glass, trim, wheels, calipers, undercarriage, wheel wells, door jambs |
| Special Features | UV protection, water repellent |
Frequently asked questions
How do you dilute CarPro HydrO2?
Mix 1 part to 6 parts water; about 30ml of concentrate covers an average 4 door vehicle.
Do you buff CarPro HydrO2 off?
No. Spray it on and rinse it off.