Most Popular in:
Biology
New in Biology (page 1 of 19)
Sep 01, 2010 | 11:23 AM CDT
Variations in Pigmentation and Ultrastructural Skin Differences Among Ethnic Groups
By: Rupa Pugashetti, MD, Santa Clara Valley Medica…
As formulators create products for varying ethnic backgrounds and with diverse skin types, an understanding of differences in pigmentation and skin structure and function becomes more important. This column reviews recent studies on the structural, genetic and ultraviolet (UV)-responsive differences in skin pigmentation to allow the formulator to create successful products for varying ethnicities and to accurately measure pigmentation.
Jun 30, 2010 | 02:25 PM CDT
Enhancing Sunscreen Efficacy for Realistic Application
By: Elsa Jungman, University of Paris XI, and Howa…
The ability of a sunscreen to protect the skin from erythema is expressed on product labels as the sunburn protection factor (SPF)—i.e., the ratio of the minimum erythema dose (MED) with sunscreen to the MED without protection. Yet in reality, consumers do not apply the same mass/cm2 as is utilized in SPF testing, so maximal protection is not achieved.
Jun 22, 2010 | 04:20 PM CDT
Center for Skin Sciences Established, Reports New Findings in Skin Tanning
By: Jane Evison, C&T magazine
Twenty five years after a fire claimed many lives, the Center for Skin Sciences at the University of Bradford (Bradford, UK), specializing in wound healing, was officially established to honor those who died. The occasion was marked by a symposium. In addition, the group recently announced new findings in relation to sunburn-prone skin and the potential for tanning.
Jun 08, 2010 | 05:00 PM CDT
To D or Not to D: Many Still Question Vitamin D
Vitamin D's role in skin is often debated in the dermatological community and it also was a popular topic at the SCC's Annual Scientific Seminar in Long Island.
Jun 02, 2010 | 09:11 AM CDT
Researchers Advance Animal-alternate Test for Skin Sensitization
Researchers at the National Institute for Occupational Safety and Health and Portland State University have developed an animal-alternative test method to assess the potential for chemicals in consumer products to cause skin allergies.
May 20, 2010 | 09:23 AM CDT
Researchers Identify Physiological Sensor Important for Skin Barrier Function
Researchers at the National Institute for Physiological Sciences (NIPS) have reported that the transient receptor potential vanilloid 4 (TRPV4) ion channel in keratinocytes is important to maintain skin barrier function and prevent skin dehydation. According to these researchers, chemicals that modulate TRPV4 activity, could affect barrier repair of damaged skin.
May 19, 2010 | 09:40 AM CDT
Research Reveals Multiple Conformations of Collagen
Collin Stultz, Massachusetts Institute of Technology (MIT) associate professor, cardiologist and biomedical engineer, recently examined how collagen breaks down in his work published online in the journal Biochemistry. His research suggests that collagen has multiple conformations, both rigid and flexible, that depend upon temperature.
May 07, 2010 | 05:52 PM CDT
Is Cosmetic Science Really 'Bad'? Part V: Who do you think you are fooling?
By: Johann W. Wiechers, PhD, JW Solutions
In previous installments of this series, the author applied Michael Shermer's Baloney Detection Kit, which includes ten questions to ask to validate a science, to cosmetic science. Having previously applied the first eight questions, the author addresses the final two in this installment.
Apr 30, 2010 | 12:35 PM CDT
Small, Smaller and Nano Materials: An Invisible Benefit
By: Johann W. Wiechers, PhD, JW Solutions
Although nanomaterials have been used in cosmetics for some time, consumers believe they may constitute a health risk due to their possible penetration into the skin. The present article evaluates the benefits as well as the skin penetration of nanoparticles used in cosmetics.
Apr 30, 2010 | 12:24 PM CDT
Unexpected Lessons in Dermatotoxicology: De minimis Magnesium++
By: Hongbo Zhai, MD, and Howard I. Maibach, MD, Un…
Traditional dermatotoxicologic investigations focus on dermatitis as well as potential systemic effects1 but rarely have they focused on trace ions. The following lesson opens new avenues of thought and investigation for intimate care product developers, since the trace ions described may dramatically impact the end product.