Ceramic Coatings and Protection
Chemical Guys HydroSlick vs Adam's Graphene Spray
Same price, same claimed year, different application. HydroSlick is a gel you apply and buff off like a wax within a minute or two; Adam's is a spray that sits for a minute or two and cures for four hours.
By Sawyer V. · Last verified 2026-09-10
We have not tested any of this. Everything below is compiled from published manufacturer specifications, and the arithmetic is printed so you can check it. This page carries affiliate links: if you buy through one we earn a commission at no extra cost to you, and it does not change the order of the picks. Full disclosure.
| # | Pick | Best for | Score | Price |
|---|---|---|---|---|
| 1 | Chemical Guys HydroSlick HyperWax Chemical Guys | Coating chemistry with a wax's removal window | 6.1/10 | Check price on Amazon |
| 2 | Adam's Graphene Ceramic Spray Coating Adam's Polishes | The longest claim in the spray class | 3.9/10 | Check price on Amazon |
No live price is currently verified, so every button here reads Check price rather than a number we cannot stand behind. Why we do it that way.
Side by side
| Chemical Guys HydroSlick | Adam's Graphene Ceramic Spray Coating | |
|---|---|---|
| Price | $39.99 for 16 oz | $39.99 for 12 oz |
| Cost per ounce | $2.50 | $3.33 |
| Format | Gel, applied and buffed off like a wax | Spray and wipe |
| Claimed durability | Up to a year | 1+ years |
| Claimed hardness | Not published | Greater than 9H |
| Before buffing | As little as 30 seconds; 1-2 minutes recommended | 1-2 minutes |
| Before exposure | 2-3 hours | 4 hours |
| Water behavior | Beading improves for up to 24 hours | Contact angles averaging 110-118 degrees |
| SiO2 content | Not published | Not published |
| Coverage | Not published | Not published |
The removal window is the catch
Chemical Guys call HydroSlick a true ceramic coating in a gel that goes on with an applicator and buffs off like a wax. The catch is how quickly it has to come off: Chemical Guys publish a removal window of as little as 30 seconds, with 1 to 2 minutes recommended, which is not much margin on a warm panel. Adam’s give their spray the same 1 to 2 minutes to sit before buffing.
Cure time
HydroSlick is the quicker of the two to put back into use: Chemical Guys publish 2 to 3 hours before exposure, with the water beading continuing to improve for up to 24 hours. Adam’s ask for 4 hours before the car meets the elements.
What each claims beyond the year
Adam’s publish more: greater than 9H hardness, contact angles averaging 110 to 118 degrees, a UV tracer that shows where the coating has gone on, and a surface list that runs from paint and glass to headlights, chrome, trim, wheels and bed liners. They also say it works as a stand-alone coating or as a topper over an existing one. Chemical Guys publish the application window, the cure time and the durability claim, and little else.
Value
At the same $39.99, HydroSlick gives you 16oz to Adam’s 12, so $2.50 an ounce against $3.33. Neither publishes a coverage figure, so how many cars a bottle does is not something either maker will tell you. The ceramic spray roundup covers both against the other sprays.
Who should buy which
- You already wax by hand and want a year from the same motion: Chemical Guys HydroSlick, $39.99 for 16oz.
- You want a spray, a hardness claim, and a topper for an existing coating: Adam's Graphene Ceramic Spray Coating, $39.99.
- You need the car back quickly: HydroSlick, at 2-3 hours before exposure against 4.
Every pick, with the working
Each entry lists the specifications the maker publishes, the axis scores those specifications produce, and what you give up. Rows that read “Not published” are not omissions on our side: they are figures the maker will not commit to in writing, and they cost the product points on the transparency axis.
Our pickCoating chemistry with a wax's removal window
Chemical Guys HydroSlick HyperWax
Chemical Guys
A 16oz gel that Chemical Guys markets as a coating and applies like a wax, claiming up to a year of protection with a removal window as short as 30 seconds and 2 to 3 hours before the car can be exposed. The short removal window is the honest catch: it is the fastest-flashing product here, and that is exactly what makes it unforgiving in a warm garage.
- Size
- 16 oz
- Claimed durability
- Up to a year
- Removal window
- As little as 30 seconds; 1-2 minutes recommended
- Before exposure
- 2-3 hours
- Hydrophobic development
- Improves for up to 24 hours
- SiO2 content
- Not published
- Published coverage
- Not published
- Warranty
- Not published
What it does well
- Up to a year claimed at $39.99 for 16oz, which is the cheapest way into coating-grade durability here
- Applies with an applicator and buffs off; no leveling technique to learn
- 2-3 hours before exposure published, against 12-24 for the proper coatings
- A jar this size is many cars rather than one
Who it is not for
- Removal window published as short as 30 seconds, which is not much margin in a hot garage
- No SiO2 percentage and no coverage figure published
- A year is a year; it is not a substitute for Mohs EVO or CQUARTZ if you want to coat once and forget
How this score was calculated
- Protection claim2.0/10, weight 20%
- Chemical Guys claims 12 months, scored against the 60-month ceiling this category tops out at. That is the manufacturer's claim reported here, not a durability figure anyone measured for us.
- Capabilitydropped
- Chemical Guys does not publish a figure for published sio2 content on this product, so the axis is dropped and the remaining weights are re-normalized.
- Cost per ounce10.0/10, weight 16%
- $39.99 for 16 oz works out at $2.50 an ounce, scored against a band of $20.00 (good) to $90.00 (expensive) for a ceramic coating.
- Price against the ceiling7.3/10, weight 14%
- A listed $39.99 against the $150 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- Chemical Guys publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency6.3/10, weight 18%
- 5 of the 8 specifications we went looking for are published by Chemical Guys. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $39.99 per Chemical Guys' own store, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from Chemical Guys' HydroSlick product page, compiled September 8, 2026.
2The longest claim in the spray class
Adam's Graphene Ceramic Spray Coating
Adam's Polishes
12 oz at $39.99 claiming 1+ years and >9H hardness, with a published 1-2 minute dwell and a 4-hour cure before exposure. It is the spray to buy if you want the longest published life in this class and you are willing to work in panels rather than misting the whole car at once.
- Size
- 12 oz
- Claimed durability
- 1+ years
- Claimed hardness
- Greater than 9H
- Dwell before buffing
- 1-2 minutes
- Cure before exposure
- 4 hours
- Published coverage
- Not published
- SiO2 content
- Not published
- Warranty
- Not published
What it does well
- 1+ years claimed, which is the top of the spray-coating class
- Dwell time and cure time both published, which is more procedure than most sprays give you
- 12 oz at $39.99 is many applications, not one
Who it is not for
- No coverage figure published, so cost per application is unknowable from Adam's numbers
- Requires surface prep to hit the claim, and the prep product is sold separately
- 9H on a spray is a claim about the cured film, not something you can check on your own panel
How this score was calculated
- Protection claim5.0/10, weight 20%
- Adam's Polishes claims 12 months, scored against the 24-month ceiling this category tops out at. That is the manufacturer's claim reported here, not a durability figure anyone measured for us.
- Capabilitydropped
- No single published number decides capability in this category, so the axis is dropped rather than invented.
- Cost per ounce2.4/10, weight 16%
- $39.99 for 12 oz works out at $3.33 an ounce, scored against a band of $1.20 (good) to $4.00 (expensive) for a spray coating.
- Price against the ceiling1.1/10, weight 14%
- A listed $39.99 against the $45 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- Adam's Polishes publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency6.3/10, weight 18%
- 5 of the 8 specifications we went looking for are published by Adam's Polishes. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $39.99 per Adam's Polishes' own store, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from Adam's Graphene Ceramic Spray Coating product page, compiled September 8, 2026.
No live price is currently verified, so every button here reads Check price rather than a number we cannot stand behind. Why we do it that way.
Questions people actually ask
+Which lasts longer, HydroSlick or Adam's Graphene Spray?
+Can I use Adam's Graphene Spray over an existing ceramic coating?
+How long before a HydroSlick car can get wet?
Where these figures came from
- Chemical Guys' HydroSlick product page — retrieved 2026-09-08
- Adam's Graphene Ceramic Spray Coating product page — retrieved 2026-09-10
Every figure on this page is a published manufacturer or authorized-retailer claim, not a measurement we made. How we research explains exactly what we did and did not do.