Testing

Recent in Testing (page 25 of 32)

A Dermatological View: Tandem Irritants With Synergistic, Additive or Quenching Effects on the Skin

In this article the results of six published tandem irritation studies are evaluated; possible mechanisms and clinical ramifications, albeit complex, are discussed. The clinical relevance of tandem irritation among cosmetics users and in many occupational settings appears obvious and suggests the need for further studies clarifying its principles and mechanisms.

Biochip Takes the Next Step Toward Replacing Animal Testing

Researchers at Rensselaer, the University of California-Berkeley, and Solidus Biosciences Inc. have developed a biochip that can mimic the effects of metabolism and analyze materials for toxicity.

Testing Tactics—REACH and In vitro Alternatives: Corrosive Potential Testing

The authors of the REACH directive had the foresight to recognize the impact of such a large amount of testing on animal use and mandated that in vitro testing methods should be used as animal testing alternatives whenever possible.

Rheological Characterization of a Modified Taurate Acrylic Polymer for Skin Care

The rheology of a pre-neutralized, hydrophobically modified acrylic polymer was investigated by dynamic mechanical measurements using this methodological approach to establish its viscoelastic profile and stability in formulations. Properties of several polymer-containing emulsions were studied and their particle size distribution investigated by laser diffraction.

Ex Vivo Porcine Developed as Alternative to Animal Testing

Symrise and Cutech Srl have developed a new skin model out of pig skin as an alternative to animal testing.

Alternative Testing or Testing Alternatives?

Johann Wiechers, PhD, writes: I am driving in a taxi somewhere with a female colleague when she asks me an intriguing question. “Tell me, Johann, how would you measure breast firming?”

Compass: Direct Routes

Will a flourishing category ever chance revealing this truth behind naturals to consumers? Perhaps so, as the naturals market becomes more saturated and key manufacturers seek ways to drive consumer interest into new areas.

Using Consumers’ Sensory Experience to Achieve Strategic Market Segmentation

Used in conjunction with marketing and marketing research techniques, consumer-based sensory evaluation techniques provide an effective business strategy for product development and brand management.

Computer-aided Formulating

Informatics techniques have been developed that are capable of manipulating huge data sets that underpin modern formulation—from mining for information, to analyzing vast amounts of data. This article highlights how the use of computer technology can increase the efficiency and efficacy of formulating.

Dihydroavenanthramide D for Anti-irritant and Anti-itch

Naturally occurring and synthetic avenanthramides were evaluated for their efficacy to inhibit substance P-induced release of histamine from mast cells. In vivo tests showed that four synthetic avenanthramides demonstrated ability to significantly reduce histamine-induced itch and redness. Dihydroavenanthramide D was also shown to be an excellent antioxidant.

With the Speed of Light: A Look at Accelerated Testing

We test a number of things in our cosmetic industry. We test for safety; for stability; for efficacy; for microbiological contamination; and for interactions between the (ingredients of the) product and its container.

In Vitro and In Vivo Offered for Sunscreen Testing

Laboratoire Dermscan and HelioScreen Labs are combining their skills to offer a complete new in vitro / in vivo service in the field of sunscreen testing.

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Practical Modern Hair Science

Practical Modern Hair Science

Between The Covers Discover:

  • Amino acid distribution and biochemistry
  • Examination of strength and anti-breakage product claims
  • Hair: growth cycle, heat protection, shine, and color intensity and retention
  • Overview of shampoos and issues relating to surfactants
  • Science of hair color including chemical reactions and formulations
  • Ethnic differences in hair and absorption of materials
  • Evaluate and quantify visual properties of hair
  • Dandruff-Causes and biology of the condition
  • Hair styling products and polymers

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Apply Topically: A Guide to Formulating

Apply Topically: A Guide to Formulating

Finally! This book offers practical approach to the formulation chemist’s day-to-day endeavors by: addressing the innumerable challenges facing the chemist both in design and at bench, such as formulating with/for specific properties; offering valuable “tips” to troubleshooting issues regarding ingredient selection and interaction, regulatory concerns that must be addressed early in development, and the extrapolation of preservative systems; exploring the advantages and limitations of raw materials; addressing scale-up and pilot production process and concerns; and much more.Order your copy today.