Toppers and sealants
Beading falls off long before a coating fails. Road film, wax residue and hard water build up on top of it and the surface stops behaving like a coating even though it is still there.
An SiO2 topper is a thin refresh layer that goes on after a wash in about ten minutes. It is not a coating and will not rescue one that has genuinely gone.
Gyeon
Q²M Cure
A ceramic detail spray for use after every wash.
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Forgiving to apply, which matters for something you are meant to use every few weeks.
Product details & buying advice
GYEON Cure High Gloss Protective Ceramic Spray Sealant for Gloss Paint
Forgiving to apply, which matters for something you are meant to use every few weeks. The easier a maintenance product is, the more likely it gets used.
Consider: Shorter-lived than a dedicated topper. This is upkeep, not a top-up layer.
Product instructions from GyeonThe alternatives
Same job, different trade-offs.
Gtechniq
C2v3 Liquid Crystal
A spray-on SiO2 layer applied after a wash.
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From the same maker as one of the more common professional coatings, so it is formulated to sit on top of one rather than compete with it.
Product details & buying advice
Gtechniq - C2 Liquid Crystal C2v3 - Make Your Car Shine and Stay Clean Longer; Instant, Effective Protection from UV Rays and Dirt with Extreme Repellency; Lasts Up to 6 Months (250 milliliters)
From the same maker as one of the more common professional coatings, so it is formulated to sit on top of one rather than compete with it.
Consider: Apply thin and buff properly. Too much product is the usual cause of the streaking people then blame on the coating.
Product instructions from Gtechniq
CarPro
Reload
An SiO2 sealant spray, one of the longest-established of its type.
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Has been the default answer to this question in the trade for years, which counts for something in a category where products appear and vanish.
Product details & buying advice
CARPRO Reload 2.0 Silica + Siloxane Ceramic Spray Sealant - 500mL (17oz)
Has been the default answer to this question in the trade for years, which counts for something in a category where products appear and vanish.
Consider: Wants a genuinely clean surface. Over road film it just seals the film in.
Product instructions from CarPro
P&S
Bead Maker
16 fl oz spray bottle
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The most forgiving product in this category.
Product details & buying advice
P&S Bead Maker Paint Sealant – Easy Spray & Wipe Protectant for Cars, Boats & RVs – Hydrophobic Gloss & UV Protection – Safe for All Surfaces - 16 Oz.
The most forgiving product in this category. Very hard to get a bad result, which makes it the right first bottle for somebody who has never done this.
Consider: Lasts weeks rather than months. Cheap per bottle, not per year.
Product instructions from P&S
Turtle Wax
Hybrid Solutions Ceramic Spray Coating
A widely stocked consumer SiO2 spray.
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In every parts store, which is the argument for it.
Product details & buying advice
Turtle Wax Hybrid Solutions Ceramic Spray Wax Coating, 16 oz (Pack of 1)
In every parts store, which is the argument for it. Good enough to keep a coating behaving between proper top-ups.
Consider: Thinner and shorter-lived than the specialist sprays. Expect weeks.
Product instructions from Turtle WaxDecide whether the finish needs a topper
| Your task | What to look for | What to check |
|---|---|---|
| Working coating | Follow its care plan | More layers are not automatically needed. |
| Standalone protection | A product intended for bare compatible surfaces | Use that product’s renewal instructions. |
| Loss of beading | Clean and inspect first | A topper changes water behavior without diagnosing the base coating. |
Plan the purchase and application
- Identify what is already on the surface.
- Choose a permitted product and application method.
- Use the labeled amount and inspect for excess residue.
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How long a coating lastsQuestions
How do I make my ceramic coating bead again?
Gyeon Q²M Cure. A ceramic detail spray for use after every wash. Forgiving to apply, which matters for something you are meant to use every few weeks. The easier a maintenance product is, the more likely it gets used.
How often should I use an SiO2 spray?
Every few washes is plenty and there is no benefit to doing it every time. Go by the water rather than the calendar: when beading flattens off and the car stops drying itself, it is due.
Can I use wax over a ceramic coating?
You can and it will not damage anything, but it sits on top of the coating and masks it rather than refreshing it, so you end up maintaining the wax instead of the coating you paid for. An SiO2 topper does the same job in the same ten minutes and works with the layer underneath.
My coating stopped beading. Is it gone?
Usually not. Road film, wax residue and hard water build up on top and the surface stops behaving like a coating while the coating is still there. A proper decontamination followed by a topper brings most of them back. If it does not, that is when a coating has genuinely gone.