Recent in Testing (page 7 of 32)

Measuring Hair Strength, Part II: Fiber Breakage

In the mechanical testing world, the tendency for materials to fail under a repeated stimulus is termed fatigue testing, and this article discusses this topic in relation to hair breakage. It will be shown that this alternative testing approach provides considerable insight into the cause of hair breakage, and subsequently allows for the identification of strategies for its minimization; it will also be demonstrated how learning this provides the underlying theory by which anti-breakage and even “strengthening” claims are crafted.

ICCVAM Requests Info on Skin Sensitization Testing

The Interagency Coordinating Committee on the Validation of Alternative Methods (ICCVAM) has requested the submission of new science or information on alternative test methods or testing strategies for skin sensitization, as part of a plan of action to advance this area.

ICCVAM Requests Info on Skin Sensitization Testing

The Interagency Coordinating Committee on the Validation of Alternative Methods (ICCVAM) has requested the submission of new science or information on alternative test methods or testing strategies for skin sensitization, as part of a plan of action to advance this area.

Researcher Develops Hydroperoxide Detection Method for Fragrance Allergens

Research from the University of Gothenburg has led to a potential method for identifying allergenic fragrance compounds in consumer products by exposing them to air.

C + K Introduces Tewameter with Three Probes for Better Efficiency

Courage + Khazaka has upgraded its well-known TEWL and barrier function measurement device, the Tewameter, with three probe heads for better efficiency.

Researcher Develops Hydroperoxide Detection Method for Fragrance Allergens

Research from the University of Gothenburg has led to a potential method for identifying allergenic fragrance compounds in consumer products by exposing them to air.

Tech Edge: Optical Tools to Examine the Structure of Cosmetic Products

To monitor or anticipate what can happen in the creation of a cosmetic product when components are combined and as time passes is no trivial task especially when compounded with the psychophysical needs for the product to fit a specific concept and to spread, feel, pour and appear elegant.

A Dermatological View: Antioxidant Inhibits UV Erythema In Vivo in Humans

Described here was an in vivo model to determine antioxidative capacity of a topical skin care emulsion versus the emulsion’s vehicle on human skin that was exposed to UVR. Results suggest the test emulsion and its vehicle control inhibited the induction of erythema and reduced inflammation caused by the UV exposure.

Wise Words From the Bench With Sergio Nacht, PhD

Today, product formulation goes hand in hand with efficacy testing, but nearly 40 years ago, when Sergio Nacht, PhD, started out in the personal care industry, it was a different story. Throughout his decades in personal care, Nacht has developed methodologies that have allowed the personal care industry to establish efficacy of a product and convey this to the consumer. He has also been instrumental in the increased efficacy of personal care products through sustained release.

Objective Emotional Assessment of Perceivable Wellness Effects

Pulse volume amplitude, skin conductivity, facial muscle activity and other psycho-physiological parameters can give an objective emotional assessment of consumer response to personal care products, enabling substantiation of claims for wellness effects, as demonstrated here in the setting of cosmetics and fabric care.

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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.