The terms AGER, colour enhancer, colour-enhancing sealer and wet-look sealer are often used interchangeably in the stone industry. But they are not necessarily the same thing.
AGER is a specific type of colour-enhancing impregnating sealer, while “colour-enhancing sealer” is a broader category of stone treatment.
Understanding the difference helps ensure the right product is selected for the stone, finish and desired result. If you haven’t already, our guide to how colour-enhancing sealers work explains the underlying optical effect.
What Is AGER?
AGER is a well-known stone treatment manufactured by Tenax.
Tenax describes AGER as a colour enhancer, impregnator and sealer. It is a solvent-based treatment designed to penetrate the microporosities of stone and produce a deeper, richer appearance while also providing water and oil repellency.
AGER is particularly well known for producing a “wet effect”. This makes it especially useful when the objective is to dramatically deepen the appearance of a stone surface.
It can be used on materials including:
- Granite
- Marble
- Travertine
- Natural stone
- Quartz agglomerates
and can be used on a range of finishes including honed, brushed, flamed, rough and polished surfaces, subject to product suitability and testing.
What Is a Colour-Enhancing Sealer?
“Colour-enhancing sealer” isn’t one specific product. It is a category of products.
Different manufacturers formulate colour-enhancing sealers in different ways. Some are designed primarily to intensify colour. Others combine colour enhancement with penetrating stain protection. Some produce a subtle enrichment of the stone, while others are designed to create a strong wet-look effect.
For example, products such as Lithofin FVE are specifically marketed as colour-enhancing impregnators for darker natural stones, while other impregnating sealers are designed to protect without significantly changing the stone’s colour.
Therefore, simply calling something a “colour enhancer” doesn’t tell you exactly how it will behave.
So Is AGER a Colour-Enhancing Sealer?
Yes. AGER is actually a colour-enhancing sealer.
The difference is that AGER is the name of a specific product/system, whereas “colour-enhancing sealer” describes a broader group of products.
Think of it like this:
- Colour-enhancing sealer = category
- AGER = a specific product within that category
This distinction is important when specifying a treatment for a customer’s stone.
What Makes AGER Different?
One of AGER’s defining characteristics is its ability to create a pronounced wet-look effect, particularly on honed and textured surfaces.
Tenax states that AGER penetrates into the stone’s microporosities rather than simply creating a surface film. This allows the treatment to provide enhancement while maintaining the stone’s ability to breathe.
This is very different from simply putting a glossy coating over the stone. The objective is to make the stone itself appear deeper and richer.
AGER on Honed Stone
This is where AGER can produce particularly dramatic results.
A honed stone can sometimes look relatively flat or washed out because the surface does not have the reflective characteristics of a polished finish. Applying an appropriate enhancing treatment can dramatically deepen the colour.
For example, a honed black granite may change from a relatively grey-black appearance to a much deeper black. The same principle can apply to:
- Honed marble
- Travertine
- Limestone
- Slate
- Flamed granite
- Brushed stone
Tenax specifically recommends AGER for rough, sanded, brushed, flamed and honed surfaces when a durable wet effect is desired.
AGER on Polished Stone
AGER behaves differently on polished stone. A highly polished surface is much less absorbent than a rough or honed surface, so the visual enhancement can be more subtle.
However, AGER can still be useful for increasing colour depth and, importantly, for matching the appearance of stone edges to the polished face.
This is particularly relevant to fabricated benchtops. A polished stone surface and its cut edge can sometimes have noticeably different colour intensity. An enhancing treatment can help bring the edge closer to the appearance of the face. Tenax specifically identifies this as one of AGER’s applications.
AGER Is Not Paint
One of the biggest misconceptions about colour enhancement is that the product simply colours the stone. AGER is not intended to work like paint.
Tenax describes it as a transparent treatment that penetrates the stone rather than creating a conventional surface film. The stone’s natural minerals remain visible.
The treatment changes the way the stone interacts with light and can make its existing colour and movement appear considerably richer. This is why the same treatment can produce very different results on different stones.
AGER vs a Standard Impregnating Sealer
This is an important distinction. A conventional impregnating sealer is generally designed to provide protection while leaving the stone’s appearance essentially unchanged. A colour-enhancing impregnator is designed to provide protection and alter the visual appearance of the stone.
For example, Dry-Treat’s STAIN-PROOF Original is described as an invisible impregnating sealer that retains the existing colour and finish, whereas its Colour Enhancing Sealer is specifically intended to produce deeper colour enrichment.
| Treatment | Main objective | Appearance |
|---|---|---|
| Standard impregnating sealer | Protection | Little or no colour change |
| Colour-enhancing sealer | Protection + colour enrichment | Deeper / richer |
| AGER | Strong enhancement + protection | Pronounced wet-look effect |
| Topical coating | Surface protection / appearance | Can create a film or altered sheen |
Does AGER Provide Protection?
Yes. AGER isn’t simply a colour treatment.
Tenax describes it as providing water and oil repellency, as well as protection against substances that can discolour the stone. It is also described as weather resistant and suitable for indoor and outdoor applications.
However, protection should always be considered separately from colour enhancement. A product’s ability to make stone look darker doesn’t automatically mean it provides the best possible stain protection for every application. The stone, environment and expected contaminants should all be considered.
What About Marble?
This is particularly important with marble. A sealer can help reduce staining, but it cannot stop acid from reacting with calcium carbonate in marble.
Tenax specifically states that AGER does not provide anti-etch protection on marble. Acidic substances such as:
- Lemon
- Citrus
- Tomato
- Wine
- Coffee
can still etch marble even when the stone has been sealed.
This is a critical distinction between staining and etching. A sealer can help protect against absorption. It cannot turn acid-sensitive marble into an acid-resistant surface — our guide to stone stains explains the difference in detail.
The Biggest Risk: Over-Application
One of the biggest problems with AGER and similar enhancing sealers is applying too much product or failing to remove the excess. The stone absorbs what it can. Anything left sitting on the surface can potentially create:
- Sticky residue
- Tacky areas
- Glossy patches
- Uneven colour
- Smearing
- Surface contamination
Tenax specifically warns that improperly applied AGER can leave a sticky film and recommends removing excess product after application. There is even a dedicated AGER Remover designed to remove excess AGER or AGER Tiger that has been allowed to dry on the surface.
This is why professional application is about much more than simply “wiping sealer on.”
Why a Test Area Is Essential
No two stones should automatically be assumed to react identically. Before applying an enhancing treatment to an entire benchtop, floor or feature wall, a small test area should be completed.
The test should establish:
- How dark will the stone become?
- Will the enhancement be uniform?
- Will the finish change?
- Does the product absorb correctly?
- Will the result match the customer’s expectations?
This is particularly important when working with expensive natural stone. A test area can prevent a treatment from turning into an expensive restoration problem.
AGER vs Colour Enhancer: Which One Should You Use?
There isn’t one universal answer. The correct treatment depends on what the customer actually wants.
If the customer wants protection with minimal visual change
A conventional impregnating sealer may be the better choice.
If the customer wants a subtle colour improvement
A mild colour-enhancing impregnator may be appropriate.
If the customer wants a strong wet-look effect
AGER may be an excellent option, provided the stone is suitable and the desired appearance is confirmed with a test patch.
If the customer wants to restore a dark honed stone
A strong colour enhancer can dramatically improve the appearance, but preparation and application become particularly important.
The Stone Codex Takeaway
AGER is a colour-enhancing sealer — but not every colour-enhancing sealer is AGER.
AGER is a specific Tenax product designed to penetrate stone, intensify its natural appearance and provide water and oil repellency. The broader category of colour-enhancing sealers includes many different formulations, ranging from subtle colour intensifiers to strong wet-look treatments.
The most important thing isn’t choosing the product with the strongest enhancement. It’s choosing the product that produces the right enhancement for the stone and the customer’s expectations.
A professional stone restoration is not about making stone as dark as possible. It’s about making the stone look naturally rich, even and intentional, while providing the level of protection the application actually requires.
Correct product + correct preparation + correct application = a professional result.