Cooling Agent WS-23: Cooling That Lets Flavor Lead

Cooling Agent WS-23: Cooling That Lets Flavor Lead

WS-23 ranks as the most popular cooling agent in e-liquids, yet its quietest strength gets the least attention. Because WS-23 is almost odorless and tasteless, it cools without fighting your flavor. Consequently, formulators build an instant, high-impact cool that supports the taste rather than covering it. This post explains why WS-23 leads with flavor, where that clean profile matters most, and how to pair it with your flavor system.

Why WS-23 puts flavor first

WS-23 (N,2,3-Trimethyl-2-isopropylbutyramide, CAS 51115-67-4) is a cooling amide that works independently of menthol. First, it brings only a mild, almost imperceptible odor, so the characteristic mint note never hijacks the recipe. Next, its fast onset and fast decay deliver a clean burst that fades before any aftertaste forms. In addition, with purity at ≥99% (HPLC) and full solubility in PG/VG, it drops straight into most liquid systems. Most importantly, because WS-23 stays quiet on the nose and palate, your top, middle, and base notes stay exactly where you designed them.

Where a clean cooling profile wins

The flavor-first advantage shows up wherever the cooling must not taste like mint. For example, fruit and candy e-liquids keep their bright, sweet character while the cool lifts them. Meanwhile, beverages and dairy gain a refreshing finish without a medicinal or herbal edge. Furthermore, confectionery, gummies, and chewing gum stay true to their intended taste from first bite to aftertaste. Beyond these, toothpaste, cosmetics, and OTC preparations benefit when a neutral cool is the goal rather than a mint signal. In every case, WS-23 supports the product instead of rebranding it as “mint.”

How to build flavor-led formulas with WS-23

Start by pre-dissolving WS-23 in propylene glycol or ethanol, then add it to the flavor system or water phase. Because it is insoluble in water, this step prevents graininess and keeps the cool even. Next, blend WS-23 with WS-3 or WS-5 when you want burst plus longer staying power. As a result, you control both the impact and the tail of the cooling curve. Therefore, request a sample and COA to match the dose to your base, and review our applications guide for usage starting points across categories.