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Recent in Testing (page 28 of 33)

Adapting SPF Testing Methods for Mineral Sunscreen Density

Jun 11, 2013 | Paul G. McCormick, University of Western Australia

A sunscreen layer’s thickness is critical to its SPF. However, current regulations specify a mass application rate for testing, rather than a volumetric application rate. This significantly underrates the SPF values of mineral sunscreens due to their higher densities since, compared with their relative organic counterparts, thinner films are being tested, as will be shown here.

Evaluating the Physiochemical Properties of Emollient Esters for Cosmetic Use

Evaluating the Physiochemical Properties of Emollient Esters for Cosmetic Use

May 31, 2013 | Mihaela Gorcea and Donna Laura, International Specialty Products (ISP)

This study assesses the physicochemical properties of four known cosmetic emollient esters in vitro to predict their sensorial benefits and correlate their properties with in vivo sensory attributes. This evaluation serves as a guide to selecting specific emollient esters for various cosmetic applications and to predicting their sensory attributes.

Fluorescence LSCM to Assess the Penetration of Low Molecular Protein Hydrolyzates Into Hair

May 31, 2013 | Olga Freis and Dominique Gauché, Laboratoires Sérobiologiques division of Cognis; and Ute Griesbach and Hans-Martin Haake, Cognis

The present study uses confocal laser scanning fluorescence microscopy to assess the penetration of protein hydrolyzates into hair. While higher amounts of protein were found in the cuticle, still significant quantities were observed in the cortical parts of hair, and this penetration was enhanced by longer incubation times.

Evaluating the Physiochemical Properties of Emollient Esters for Cosmetic Use

A Review of Genomic Techniques in Cosmetics Testing

May 31, 2013 | Remona Gopaul,*† Helen Knaggs, PhD,* and R. Randall Wickett, PhD†, *Nu Skin Enterprises, †College of Pharmacy, University of Cincinnati

Genomics assists product developers in understanding the expression of specific genes and their relationship to particular skin attributes. This article reviews commonly used testing techniques, such as DNA microarray, RT-PCR, SAGE, northern blot and RNA sequencing, and describes their application in testing the effects of cosmetic ingredients and products on skin.

Fischer-Tropsch vs. Mineral Products for Moisturization

May 31, 2013 | Madelyn Bekker, PhD; Nicolaas Rossouw Louw; and Glenda Vanessa Webber, PhD, Sasol Wax

Differing amounts of Fischer-Tropsch (FT) wax were used in petroleum jelly and final cosmetic emulsions to evaluate moisturizing effects in skin. FT wax was shown to perform as well or better than traditional mineral-derived products.

Assessing the Impact of Hair Damage Types on Color Retention

May 31, 2013 | Denis Bendejacq, PhD, Solvay

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.

Comparison of Age Determination by Three Evaluation Methods: Self-assessment, Expert Grader and Naïve Grader

May 31, 2013 | Rosanna Mootoo, Nima Gohil, Cristina Stroever and Christian Oresajo, L’Oréal USA Research & Innovation

This exploratory study investigates how consumers perceive age, using objective and subjective approaches. Results of this study suggest that when a subjective approach is implemented for age determination, subjects affix their emotions to the evaluation. The reverse logic was applicable for the expert and naïve grader methods, as grader results appeared more neutral than the self-assessment.

Testing Moisturizing Claims for Skin

May 31, 2013 | Chris McLeod, HPCI Media

Although this author cannot deny that moisturization capabilities can provide relief for those who suffer from flaky, itching or irritated and dry skin, it would be careless not to acknowledge the marketing-based beguilement within this moisturization sector.

Fischer-Tropsch vs. Mineral Products for Moisturization

May 31, 2013 | Madelyn Bekker, PhD; Nicolaas Rossouw Louw; and Glenda Vanessa Webber, PhD, Sasol Wax

Differing amounts of Fischer-Tropsch (FT) wax were used in petroleum jelly and final cosmetic emulsions to evaluate moisturizing effects in skin. FT wax was shown to perform as well or better than traditional mineral-derived products.

Assessing the Impact of Hair Damage Types on Color Retention

May 30, 2013 | Denis Bendejacq, PhD, Solvay

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.

Comparison of Age Determination by Three Evaluation Methods: Self-assessment, Expert Grader and Naïve Grader

Comparison of Age Determination by Three Evaluation Methods: Self-assessment, Expert Grader and Naïve Grader

May 30, 2013 | Rosanna Mootoo, Nima Gohil, Cristina Stroever and Christian Oresajo, L’Oréal USA Research & Innovation

This exploratory study investigates how consumers perceive age, using objective and subjective approaches. Results of this study suggest that when a subjective approach is implemented for age determination, subjects affix their emotions to the evaluation. The reverse logic was applicable for the expert and naïve grader methods, as grader results appeared more neutral than the self-assessment.

Testing Moisturizing Claims for Skin

Testing Moisturizing Claims for Skin

May 30, 2013 | Chris McLeod, HPCI Media

Although this author cannot deny that moisturization capabilities can provide relief for those who suffer from flaky, itching or irritated and dry skin, it would be careless not to acknowledge the marketing-based beguilement within this moisturization sector.

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