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Section: Cosmetic Ingredients > Rheology/Thickener

Correlating the Structure and Rheology of Lamellar Liquid Crystalline Phases in Emulsions

This paper describes the correlation between the structure of liquid crystalline phases in emulsions and their rheological characteristics. An oleosome/lipophilic liquid crystalline-forming system and hydrosome/hydrophilic liquid crystalline-forming system were investigated. At the same high shear rate viscosity, the oleosome-system showed less thixotropy and rapid recovery when compared with the hydrosome-system.

Nonaqueous Emulsions: History and Current Specialized Applications

Since the early 1980s, nonaqueous emulsions have attracted technical interest as potential vehicles and delivery systems for personal care products. This is due to the development of a broad range of silicone-based emulsifiers, silicone polymers and other polymeric emulsifiers that have enabled their use. This article will briefly review their history and evolution into current-day specialized applications.

Nonaqueous Emulsions: History and Current Specialized Applications

Since the early 1980s, nonaqueous emulsions have attracted technical interest as potential vehicles and delivery systems for personal care products. This is due to the development of a broad range of silicone-based emulsifiers, silicone polymers and other polymeric emulsifiers that have enabled their use. This article will briefly review their history and evolution into current-day specialized applications.

Tara Gum for Emulsion Thickening and Texturizing

Seppic has launched a thickening and texturizing polymer that is 100% plant-derived.

By adding water to the concentrate and stirring at room temperature, the emulsion builds up to a final form based on the amount of water added.

BioAktive's Hydramaxx Emulsion System Offers Customizable Viscosity

Hydramaxx is an emulsion system with low water content that enables manufacturers to add water and customize its viscosity.

Bring Food to the Soul of your O/W Emulsion with a Dual Rheology Stabilizing System

Cosmetic emulsions can be stabilized via bulk rheology and interfacial rheology by using a unique synergistic blend of two polysaccharides in a technology derived from the food industry.

In this study, the biopolymers whey protein and chitosan were used to create a thermoresponsive emulsion. The impact of including the chitosan, and specific oils on the rheological properties and response to temperature was investigated.

Study Finds Sustainable Thermoresponsive Whey Protein- and Chitosan-based O/W Emulsion Possibilities

In this study, the biopolymers whey protein and chitosan were used to create a thermoresponsive emulsion. The impact on rheological properties with chitosan and specific oils, as well as response to temperature, were investigated.

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[video] Mixing Low-energy Emulsions

This quick emulsion requires little energy to create, enabling a variety of formulation textures with added sustainability benefits.

A Surfactant/Biopolymer Stabilizer for Emulsions

An emulsifier/biopolymer system using a mixture of nonionic surfactants and two biopolymers was developed. The surfactants provide effective steric stabilization against coalescence, whereas the biopolymers provide a high residual viscosity and yield value, thus providing stability against creaming. The mechanism of stabilization is discussed in terms of the synergy between the two biopolymers.

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Cosphatec Ingredient Enables Sustainable Emulsions

The sustainable ingredient is derived from sunflowers in order to provide conditioning properties to formulations.

Improving Dispersion in Gels/Emulsions with Granulated Carbomer

Evonik Goldschmidt GmbH has introduced a granulated carbomer to improve dispersion in cosmetic or pharmaceutical emulsions and gels.

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Study Reveals Critical Thickener Concentration in Emulsions

Work published in Chemical Engineering Science used a multiscale approach to study the dynamics of emulsions at various scales. Results identified a critical thickener concentration at which little variation was observed regardless of scale.

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Choosing Thickening Agents for Emulsions, Part I: Water Phase Thickeners

As readers of this column certainly must by now know, emulsion stabilization is a favorite topic of mine. A key component of every emulsion is the thickener or, more properly, a thickener system that is employed.

Naturally Derived Rinse-off Concentrates and Emulsifiers

Stephenson Personal Care has launched two new lines—a line of multifunctional rinse-off concentrates, and a line of of oil and water soluble emulsifiers. Both Durosoft and Duroclens are derived from natural sources.

Polymers for Thickening and Aesthetics of Surfactant Systems

In the presented study, researchers suggest that acrylates/aminoacrylates/C10-30 alkyl PEG-20 itaconate copolymer serves to stabilize hydroxypropyl starch phosphate polymer in surfactant systems, and also enables hydroxypropyl starch phosphate polymer to further build viscosity.

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Effect of Perfumes on the Viscosity of Surfactant Systems

It is well-known that perfumes can affect the viscosity of bubble bath or shampoo formulations. Usually they have a thinning effect, but they can also cause a viscosity increase. The effect and its magnitude will vary with perfume type and also with the product formulation. Small changes in the latter can cause large changes in a perfume's effect on the viscosity.

Polymers for Rheology and Conditioning in Hair and Skin

DKSH’s Performance Materials business unit has collaborated with a polymer manufacturer to launch two polymer lines to its Luna range of products.

Organic Avocado and Coconut Butters for Skin and Hair from Naturochim

At in-cosmetics in Paris, Naturochim will introduce the latest additions to its Premium Organic line of butters, avocado and a coconut.

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