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Kester Wax Explained

Ester chemistry used in personal care and cosmetics can range from oils to waxy solids depending on their molecular weight. The differences in composition will affect the product form, its properties, and its behavior in finished formulas.

Each of Koster Keunen’s Kester Waxes are created for different performances in finished products.

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FORMULATION GUIDELINES
Each Kester Wax follow the same basic guidelines. Melt into oil phase. Best practices for working with wax chemistries is to melt 5-10 degrees over melt point.

CLEAN BEAUTY
Approved for use* with leading brands including but not limited to: Clean at Sephora, Credo Beauty and Whole Foods Premium Body Care.

 

* at the time of print

Products

Wax esters allow specific characteristics of a formula to be designed. They are advanced tools for the chemist to shape distinct features.

Kester Wax K-24

Kester Wax K-48

Kester Wax K-56

Kester Wax K-59

Kester Wax K-60P

Kester Wax K-62

Kester Wax K-72

Formulas

Example formulas showcasing each of the Kester Wax products listed.

Formulas

Kester Wax K-24

Wax No. 6358B

A non-traditional wax ester, Kester Wax K-24 is a solid at room temperature with performances comparable to a liquid ester in formulations. This product will not structure systems. Kester K-24 is highly compatible in all systems, similar to most cosmetic oils and liquid esters.

Solid to Liquid in a Blink

Kester Wax K-24 has a fast phase change allowing this ester to transition from solid to liquid instantly. The chemistry lends an initial cooling effect in some emulsion formulas, and provides that “instant slip” in formulation provided by the low melt point (25°C).

Applications

Highly versatile ester wax that can be used in all applications including Skin Care, Hair Care, Color Cosmetics, Sunscreens, AP/DEO, Wash-off or Leave-on products. Acceptable for natural, clean beauty and vegan formulas.

Kester Wax K-48

Wax No. 6120P

A non-traditional wax ester, […]

In personal care, beeswax is used for oil gelling capabilities, structuring, thickening, film forming and can aid in emulsification.

The protective layer of the fruit, the peel, provides a barrier and stops the orange from drying out. The botanical lipids within the peel are also beneficial to our skin, acting as emollients to shield, moisturize and lubricate the skin.