Mylor RE-cool Takes Aim at the Next Generation of Vape Cooling

For years, cooling has been one of the easiest ways for flavor developers to change the personality of a vape recipe. Add the right cooling agent to a fruit blend and suddenly watermelon feels colder, berries seem sharper, and tropical flavors get a refreshing finish.

But the cooling side of the industry is changing. Regulatory scrutiny in Europe is forcing manufacturers and flavor houses to take a closer look at the ingredients behind those familiar icy sensations. That is creating demand for new approaches that can preserve the sensory experience without relying on ingredients facing restrictions.

Mylor is positioning its RE-cool cooling blend as one such solution. The company presented RE-cool at InterTabac 2026 in Dortmund, Germany, where industry professionals could sample the product and compare its sensory characteristics with WS-23 and other cooling alternatives for vape juice. 

The Problem With Replacing WS-23

WS-23 has been a familiar ingredient for flavor formulators because it provides a strong cooling sensation while generally staying out of the way of the flavor itself.

That's particularly valuable in fruit-heavy recipes. When a formulator creates something like a strawberry ice, blueberry ice, or tropical fruit blend, the goal is usually to make the flavor feel colder without turning the recipe into a mint or herbal profile.

Replacing WS-23, therefore, isn't simply a matter of finding another ingredient that creates a cold sensation.

The substitute also has to fit the flavor. If it doesn't provide enough cooling, the finished recipe can feel flat. If it brings its own noticeable taste, it can interfere with the fruit or sweet notes. And if it creates bitterness toward the end of the draw, the problem can become even more noticeable during repeated use.

Regulation Is Driving the Search for Alternatives

The push for alternatives is happening alongside increased regulatory attention in Germany and elsewhere in Europe.

Germany's Federal Institute for Risk Assessment has published opinions examining cooling agents used in e-cigarette products. Its 2025 assessment addressed WS-23, WS-3, and WS-5, while a 2026 assessment examined nine additional cooling substances, including menthol and several other compounds. BfR has emphasized that available data on the inhalation toxicity of these substances remains limited.

For companies developing products for European markets, this creates a moving target. Formulas have to be evaluated not only for flavor performance but also against the regulatory requirements that apply to the finished product.

Mylor Says RE-cool Takes a Different Route

Mylor's response is RE-cool, which the company describes as a cooling blend developed through extensive formulation work and sensory testing.

Rather than presenting it as a direct one-for-one replacement for WS-23, Mylor says the product uses a sensory signal interaction approach designed to generate a strong cooling sensation while maintaining a relatively neutral flavor character.

According to the company, RE-cool excludes WS-23, WS-3, WS-5, and menthol. Mylor also says its testing indicates that the cooling intensity can reach a level comparable with WS-23.

Those performance claims are based on Mylor's own testing, so formulators considering the product would still need to evaluate it independently in their specific recipes.

The Goal Is Cold Without Changing the Recipe

For flavor developers, neutrality may be just as important as cooling intensity.

Imagine a recipe built around ripe peach. The peach needs to remain sweet, juicy, and recognizable. If the cooling agent introduces an obvious herbal or camphor-like note, the finished product may no longer taste the way the creator intended.

Mylor says RE-cool was developed to avoid that problem. The company describes the blend as nearly flavor-neutral and says it doesn't compete with fruit and sweet notes.

That could make it particularly interesting for complex recipes where the cooling sensation is supposed to sit behind the primary flavor.

Bitterness Can Be a Hidden Problem

Another issue Mylor is targeting is the aftertaste.

A cooling system may seem impressive on the first few draws but become less appealing if bitterness or astringency develops later. That can be particularly problematic in products intended to deliver an intense cooling sensation.

Mylor says RE-cool is designed to inhibit bitterness within its effective dosage range and provide a more consistent cooling release. The company reports that the sensory profile remains clean during prolonged use.

As with its cooling-intensity claims, these results should be viewed as manufacturer-reported performance rather than an independent certification.

InterTabac Offered a Chance to Compare It Firsthand

Mylor used InterTabac 2026 as an opportunity to put RE-cool directly in front of the industry. The Dortmund event brought together companies involved in tobacco, nicotine, vaping, and related product categories, with regulation and innovation among the broader themes discussed at the show.

At Booth 1B.A10, visitors could sample RE-cool, compare its sensory profile with other cooling options, and talk with Mylor about formulation support.

That kind of direct testing matters because cooling performance can change substantially depending on what other ingredients are present in a recipe.

Cooling Development Is Entering a New Phase

The story around RE-cool is ultimately bigger than one new cooling blend. It reflects the changing priorities of vape flavor development.

In the past, the central question might have been how much cooling a formula could deliver. Today, manufacturers have to consider a much longer checklist: Is the ingredient suitable for the target market? Does it preserve the intended flavor? Does it create unwanted notes? Does the sensory profile remain consistent?

Mylor says RE-cool was developed with those questions in mind.

Whether it becomes a widely adopted alternative will depend on regulatory developments, independent evaluation, and how well it performs across real-world formulations. But the direction is clear: as Europe continues to scrutinize cooling agents, flavor companies are being pushed to develop solutions that deliver more than just a cold sensation.

The next generation of cooling technology will have to balance regulation and sensory performance at the same time.