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266 Results
Section: Testing > Method/Process
Method/Process
Properties of a Pseudoceramide Multi-Lamellar Emulsion In Vitro and In Vivo
Tests of a pseudoceramide multi-lamellar emulsion formulation for its stability and its assistance to barrier recovery in vivo on damaged skin suggest dermatologic and cosmetic possibilities.
Method/Process
Assessing the Impact of Hair Damage Types on Color Retention
This article reviews and assesses damage types caused to hair before and after artificial coloration, i.e., by bleaching, perming, heat treatment, UV exposure and shampooing, to compare how they impact color durability individually and combined. Formulation emerges as the key to designing shampoos that efficiently deliver actives to improve color protection against these and other damage types.
Sensory
The Perplexing Topic of Hair 'Type': How Do We Classify Hair?
Most hair-related properties and issues can be rationalized by fiber size and shape, and/or the consequences of extreme conditions. However, the varying reactivity of different hair types with chemical treatments suggests potential differences in structure.
Method/Process
Assessing the Impact of Hair Damage Types on Color Retention
This article reviews and assesses damage types caused to hair before and after artificial coloration, i.e., by bleaching, perming, heat treatment, UV exposure and shampooing, to compare how they impact color durability individually and combined. Formulation emerges as the key to designing shampoos that efficiently deliver actives to improve color protection against these and other damage types.
Method/Process
Zeta Potential and Particle Size to Predict Emulsion Stability
Emulsions are popular vehicles in skin care due to their affinity for the skin; however, they are thermodynamically unstable systems. This study investigates zeta potential and particle size distribution as potential screening tools to predict instabilities in emulsion-based cosmetic products, to supplement regular accelerated stability testing.
Moisturizing
Liquid Crystals in O/W Emulsions with Urea: Development and Testing
Using a ternary phase diagram, the authors developed systems based on nonionic surfactants, light paraffin oil, water, and (optionally) urea. Systems in which lamellar liquid crystals formed and in which urea was an ingredient showed higher occlusive power and lower TEWL in in vitro tests.
Literature/Data
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.
Method/Process
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.
Methods/Tools
MIT Mixes Emulsions That Stick
As the cliché goes, oil and water do not mix. Research in
Nature Communications
may have found a way around this, forming emulsions from the bottom up using condensation and cooled oil.
Method/Process
Testing A New Platform for Skin Care Emulsions
The authors describe how to test an ingredient for its potential as a skin care emulsion platform using, as an example, a new starch-based ingredient called hydroxypropyl starch phosphate.
Method/Process
Study Reveals Factorial Model to Predict O/W Emulsion Stability
A study published in the
Journal of Pharmacy & Pharmacognosy Research
confirmed an approach to predict the physical stability and quality of o/w cosmetic emulsions using full factorial design.
Sun Care
Uniquely Stable Emulsions Revealed Through Freeze-fracture Transmission Electron Microscopy
Researchers investigated the structures and features of emulsions made with different emulsifiers via freeze-fracture transmission electron microscopy. Potassium cetyl phosphate formed more multi-lamellar spheres than other emulsifiers, and aggregated homo-domains on top of lamellar sheet surfaces and multi-lamellar spheres. These homo-domains are likely to be responsible for the excellent emulsion stability achieved.
Method/Process
Mechanisms of Tape Stripping and Protein Quantification
In this article, several methods to quantify the protein collected by tape stripping are described, including traditional gravimetric methods as well as novel colorimetric and visible spectroscopic techniques. Further, one colorimetric method is described to effectively determine the keratolytic efficacy of various materials in vivo, suggesting additional roles for this method.
Method/Process
Computerized Measurement and Correction of Color Cosmetics
With a spectrophotometer and computerized color measurement software, the cosmetic chemist can do both basic color quality control and color formulation and correction easily in the lab.
Method/Process
Lipotec’s Study Offers Cold Weather and Wrinkle Treatment
The Antarcticine marine ingredient is Lipotec’s latest in vivo study, which proved its efficacy to fight cold weather and wrinkles.
Literature/Data
Testing the Fate (and Exposure) of Cosmetic Ingredients
Risk and exposure go hand-in-hand. So when researchers dared to publish a new method to assess the exposure and fate of cosmetic ingredients, we couldn't help but give them exposure, in this review.
Claims/Labeling
NSF International to Offer GMRA Certification and Audits
GMP standards developer NSF International will now provide official Global Retailer and Manufacturer Alliance (GMRA) certification and audits for dietary supplements, cosmetics/personal care products and OTC drugs.
Hair Care
A Hint of Peppermint for the Hair and Scalp
Naolys's newest ingredient, derived from peppermint leaf, is designed to rebalance sebum and enhance the hair and scalp. The active can be used in any type of hair care formulation, including shampoos, masks, serums and long-term hair treatments.
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