Potassium cocoyl glycinate can look deceptively simple on an ingredient list. In the warehouse, it may arrive as a white powder or a pale liquid. In the formula, those two supply forms can change the water balance, addition route and amount of raw material required.
The useful first question is not “Which grade is best?” It is “What does this cleanser need from the surfactant, and which supply form can our plant handle well?” Once those two answers are clear, the product choice becomes much less dramatic.
This guide gives formulators and technical buyers the shared vocabulary for that decision: ingredient identity, commercial composition, active-matter basis, process fit and the information worth sending with a sample request.
What the INCI name tells you
Potassium Cocoyl Glycinate, often shortened to PCG in technical discussions, is an anionic amino acid surfactant. “Glycinate” points to glycine, “cocoyl” describes fatty-acid-derived groups associated with coconut oil, and “potassium” identifies the salt form.
Its main cosmetic role is cleansing. The surfactant helps water remove oily soil from skin or hair and can contribute to the foam profile of a wash-off product. The COSMILE Europe ingredient database also lists cleansing among its functions.
That INCI name describes the ingredient, not everything in the commercial drum. A supplied grade may also contain water, salt or other declared components. Two offers can therefore share Potassium Cocoyl Glycinate on the first line and still behave differently in purchasing and production. The short INCI is only the start of the conversation.
Cleansing, foam and mildness are different questions
PCG is used in facial cleansers, cleansing foams, body washes and shampoos. That application range does not mean one grade or one dosage will suit every format. A pump foam needs easy dispensing. A paste cleanser has a very different water and structure problem. A shampoo brings its own co-surfactants, polymers and conditioning ingredients to the party.
Foam is easy to see, so it often receives more authority than it deserves. High foam does not by itself prove soil removal, rinse feel or skin compatibility. Evaluate those properties separately in the complete formula.
The term “amino acid surfactant” also should not carry an entire mildness claim on its shoulders. A 2024 study of potassium cocoyl glycinate blends found that selected co-surfactants and other formulation ingredients changed irritation-related responses in laboratory tests. The result is useful for formulation thinking, but it does not replace finished-product safety assessment.
Powder and liquid grades solve different practical problems
A powder grade is worth considering when formula space matters. It introduces less carrier material, which can help in concentrated systems or projects where batch water is already crowded. The trade-off is straightforward: the plant has to wet and disperse the powder properly.
A liquid grade moves part of that preparation work upstream. It can often enter the water phase directly and suits equipment built around liquid transfer or metering. In return, the formula receives more carrier material, and the full declaration may include components beyond surfactant and water.
Neither format is automatically more advanced, more economical or easier. Powder is convenient only when powder handling is routine. Liquid is convenient only when its extra mass and composition fit the formula and production plan. A plant manager can settle this argument faster than a brochure.
Compare the numbers on the correct basis
Active matter is the starting point for calculating how much surfactant a raw material contributes. If two grades have different active levels, equal raw-material dosages do not create an equal comparison.
Solid content measures residue under a defined test method and can include non-surfactant material. It may look similar to an active-matter result, but the two values do different jobs. Do not let one quietly substitute for the other in a conversion calculation.
pH also needs its test conditions. Concentration and temperature affect how the result should be read. A pH reported on a diluted raw-material sample is not a finished-cleanser target, and results obtained under different methods should not be lined up as if they were identical.
For procurement, ask for the agreed specification basis before comparing grades. For formulation, use that basis to calculate an equivalent starting contribution, then rebalance the water and other carried components.
Read the commercial grade, not just the headline ingredient
The full INCI declaration tells you what enters the formula with the surfactant. The TDS explains the normal specification and handling route. The SDS supports safe storage and handling, while the batch COA reports selected results for the material actually supplied. These documents answer different questions, so asking one of them to do every job usually creates more confidence than clarity.
For example, a liquid grade may contain a preservation-support system that needs to be included in the formula review. That does not automatically preserve the finished cleanser. The whole product still needs an appropriate preservation assessment under its intended packaging and use conditions. A powder grade may have very high solids, but solids should not be renamed active surfactant unless the method and specification say so.
Also check that the sample, TDS and quotation carry the same product code and current revision. This sounds almost comically basic, yet it prevents a surprisingly expensive problem: a successful laboratory trial tied to one grade while purchasing compares another. Good paperwork will not formulate the cleanser for you, but it keeps the experiment attached to the right raw material.
How INNO maps those choices to two grades
INNO currently supplies Potassium Cocoyl Glycinate as KWGCK-95 powder and KWGCK-30 liquid. Their documented supply forms, compositions and addition routes create a clear first selection boundary.
| Selection point | KWGCK-95 | KWGCK-30 |
|---|---|---|
| Supply form | White solid powder | Colorless to light yellow liquid |
| Declared INCI components | Potassium Cocoyl Glycinate, Aqua, Potassium Chloride | Aqua, Potassium Cocoyl Glycinate, Phenoxyethanol, Caprylyl Glycol, Potassium Chloride |
| Addition guidance | Disperse in cold water under stirring, then heat | Add directly to the water phase and stir well |
| Standard pack | 15 kg per drum | 200 kg per plastic drum |
Choose KWGCK-95 as the first candidate when a concentrated powder fits the formula and the plant can accommodate its dispersion route. The preparation begins with cold-water dispersion before heating, so a process that starts hot needs review before the first production trial.
Choose KWGCK-30 as the first candidate when direct liquid addition fits the equipment and operating preference. Its full declaration includes Phenoxyethanol and Caprylyl Glycol, so it should not be treated as powder plus water. Those components belong in the composition and preservation review.
Match the raw-material format to the cleanser format
Pump foam: the liquid route is a sensible starting point when direct dosing suits production. The filled dispenser still needs evaluation because a lively beaker foam can become surprisingly shy inside the wrong pump.
Liquid facial cleanser, body wash or shampoo: either route may fit. Let the active-matter calculation, water balance and plant equipment decide which sample should go first.
Concentrated paste: the powder route deserves an early look when carrier water is a real limitation. Confirm that the available mixing process can disperse it consistently.
Powder cleanser: a powder surfactant may suit the format, but the complete blend still needs its own moisture, dispersion and packaging assessment.
The rest of the surfactant system matters as much as the package on the PCG drum. Co-surfactants, electrolytes, polymers, fragrance and oils can change foam, clarity, viscosity and rinse feel. Treat the grade choice as a strong starting point, then judge the complete formula rather than expecting one raw material to carry the entire sensory brief.
Turn a sample request into a useful comparison
Send INNO the application and intended product form, together with the target surfactant active contribution. Add the expected pH range, current co-surfactants and whether the plant prefers liquid dosing or can disperse powder.
If the project replaces another grade, include its complete INCI and active-matter basis. Request the current TDS and SDS under the same product code as the sample, then use the relevant COA for the supplied batch. Paperwork narrows the candidates; the sample shows whether the chosen route fits the actual formula.
Frequently asked questions
Is KWGCK-30 simply diluted KWGCK-95?
No. KWGCK-30 has its own complete INCI declaration, including Aqua, Phenoxyethanol, Caprylyl Glycol and Potassium Chloride. Review it as a distinct commercial grade when converting a formula.
Can the two grades be substituted at the same dosage?
No. First compare the agreed active-matter basis and calculate an equivalent surfactant contribution. Then adjust the batch water and review every component carried in by the selected grade.
Does powder form mean the raw material is anhydrous?
No. KWGCK-95 declares Aqua and Potassium Chloride alongside Potassium Cocoyl Glycinate. Check the current specification before making a purity, moisture or anhydrous claim about the supplied material.
Which documents should accompany a sample?
Request the current TDS and SDS for the exact product code, then obtain the COA for the supplied batch. Make sure the test basis matches the values used in your comparison.
Request the grade that fits your process
Send INNO your application, product format, target active contribution, intended pH and mixing preference. We can provide the matching grade documents and sample so your team can compare powder and liquid on a useful basis.
