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Testing
New in Testing (page 24 of 24)
May 06, 2003 | 02:00 AM CDT
Flexabrasion: A Method for Evaluating Hair Strength
By: J. Alan Swift, Developmental Toxico-Pathology …
Both bending and abrasion should be tested—along with extension—when evaluating hair strength, as the authors show in tests of a new active for increasing the strength of bleached hair.
May 06, 2003 | 02:00 AM CDT
Strategies to Reduce Contact Allergy to Fragrances
By: Marie Loden and Fredrik Edlund, ACO HUD AB; an…
The author discusses current animal-based testing and proposes a strategy based on maximum permitted levels of certain fragrance ingredients in cosmetics as ways to reduce contact allergy to fragrances in cosmetic products.
May 06, 2003 | 02:00 AM CDT
Comparing Methods to Measure Porcine Skin Integrity In Vitro
By: S. Richert, A. Schrader and K. Schrader, Insti…
To confirm the integrity of porcine ski prior to penetration tests, published studies show that measuring transepidermal water loss, transdermal electrical resistance or caffeine penetration levels are often chosen techniques. New results demonstrate that
May 06, 2003 | 02:00 AM CDT
Properties of a Pseudoceramide Multi-Lamellar Emulsion In Vitro and In Vivo
Byeong Deog Park and Yoon Kim, NeoPharm; MyungJin …
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.
May 06, 2003 | 02:00 AM CDT
Preservative Efficacy Testing of Aqueous Cosmetics and Drugs without Counting Colonies
By: D.S. Orth and K.S. Delgadillo Eck, Neutrogena …
A miniaturized system using broth enrichment followed by either streaking on agar or fluorescence treatments can eliminate colony counting in the linear regression method of preservative efficacy testing.
May 06, 2003 | 02:00 AM CDT
ATP Bioluminescence: Detecting Microbial Contamination in Dentifrices
By: Luis Jimenez, Consumer Product Testing Co.
In tests on eight dentifrice formulations, a bioluminescence system based on adenosine triphosphate (ATP) detected tested microorganisms qualitatively within 24-27 hours, compared to 5-7 days required for quantitative detection by standard methods.
May 06, 2003 | 02:00 AM CDT
Evaluating Shine on Hair
By: Randy Schueller and Perry Romanowski, Alberto-…
Marketing research studies have shown that shine is one of they key benefits that women expect from hair care products, particularly from shampoos and conditioners. This article defines shine in the context of hair care and discusses ways to measure it.
May 06, 2003 | 02:00 AM CDT
Patch Testing vs. In Vitro Alternatives
By: Barrie Drewitt-Barlow, Laura Marshall, and J. …
A comparison between results of in vitro and in vivo testing on a selection of personal-care products begins to establish a validation database for in vitro product safety testing.
May 06, 2003 | 02:00 AM CDT
Literature and Patent Review: Analytical and Test Methodologies 1990-2000, Part I
By: Charles Fox, Charles Fox Associates
From more than 40 technical sources published in the 1990s, the author reviews methodologies from measuring important variables such as hair condition, bioactivity and irritation of skin and eyes.