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Powder-Makeup

Patent Picks—Microbe Separation, Emulsion Arrays and Salicylic Acid Delivery From Powder

Patent Picks are compiled by the editors from publicly available sources. This edition features processes for identifying microorganisms, forming emulsion arrays and delivering salicylic acid from powder.

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Pop the Cork: Quercus suber for Naturally Sourced Antioxidants and Emulsion Stability

Consumers demand better and more sustainable alternatives. Further, some bioactive ingredients register greater biocompatibility. This has driven the industry to search for plant-derived compounds with biological activity. Quercus suber L., or cork oak, is shown here to provide an interesting option.

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.

Liquid Crystal O/W Emulsions to Mimic Lipids and Strengthen Skin Barrier Function

In the present study, the authors produced liquid crystalline (LC) o/w emulsions whose structure mimics the skin’s intercellular lipids. These emulsions are shown in cosmetic formulations to strengthen skin barrier functions while maintaining stability at higher temperatures than that of the skin.

Using Skin Models to Assess the Effects of a Skin Care Emulsion on Skin Barrier Function

This study utilizes a 3D skin model to investigate barrier repair after damage with SDS and application of a skin care emulsion; it also demonstrates the suitability of using 3D skin models to study barrier repair.

Formulate This: Inverse Emulsions

Cosmetics & Toiletries presents "Formulate This,” a new column highlighting commonly asked formulating questions with answers provided by seasoned industry experts. In the present discussion, industry expert Ken Klein discusses inverse emulsions.

Technically Speaking--Acid-type Hair Color

Ajinomoto Co. Inc. discloses an inflammation inhibitor containing the zinc salt of acylamino acid intended to provide a good texture in use on skin.

Comparatively Speaking: Ten Cosmetic Formula Types

Cosmetic formulas include solutions, creams/emulsions, lotions, ointments/pastes, suspensions, tablets, powders, gels, sticks and aerosols. Here, Tony O'Lenick turns to Perry Romanowski to discuss their differences.

Formulating Water-resistant Sunscreen Emulsions

Note that today we aren't permitted to use the term "waterproof" since the FDA believes that this term implies an absolute-it never washes off-and feels that consumers might be inclined not to reapply sunscreen after swimming or perspiring. So, we must now use the term "very water resistant" in its place.

Peptide to Assist Botulinum Toxin Type A

Lipotec has launched a peptide positioned to topically assist Botulinum Toxin Type A while "waiting for the next injection."

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.

Multiple Emulsions: Applications in Cosmetics

Multiple emulsions and factors affecting their preparation are discussed in this article that also lists the advantages of each of the two main types—w/o/w and o/w/o—and gives examples of each in cosmetic formulations.

Comparatively Speaking: Emulsion vs. Colloid

Industry expert Anthony O'Lenick, Jr., explains the different between an emulsion and a colloid.

Microchannel Processing: A Novel Approach to Making Emulsions

In the present article, microchannel emulsification is explored as a process method that precisely adds a dispersed phase into a continuous phase through an engineered dispersion plate. This approach is shown to produce emulsions with smaller droplets having tighter size distributions than conventional means, which leads to stable products with the limited need, if any, for surfactants.

Formulating Water-in-Oil Emulsions: A Scary Endeavor

Formulating water-in-oil emulsions is inherently more difficult than oil-in-water emulsions.

Designing Emulsions for Relaxer Actives

Relaxer emulsions have unique requirements regarding pH, hydrophilic-lipophilic balance and minimizing irritation potential. This article suggests ways to meet these requirements and provide an ideal emulsion base for relaxer actives.

Preparing PIC Emulsions with Very Fine Particle Size

A new technology has been developed for the production of o/w phase inversion concentration (PIC) emulsions with a very fine particle size and excellent storage stability. The concept is based on non-ethoxylated emulsifiers and can be easily used for the preparation of impregnating lotions for cosmetic wet wipes.

New Perspectives in Emulsion Formation

Previously, the theory explaining emulsion behavior was based on the equilibrium contact angle of the particle at the interface; however, Vinothan N. Manoharan, PhD, and his team at Harvard believe the time allowed for the system to reach equilibrium and the force pushing the particle to the interface are equally as important.

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