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Biology
New in Biology (page 4 of 28)
Jul 24, 2012 | 09:29 AM CDT
UVA and UVC Skin-damaging Radiation Found in Energy-efficient Light Bulbs
Researchers from Stony Brook University have reported that compact fluorescent light (CFL) bulbs emit UVC and UVA radiation found to be damaging to human skin tissue in close proximity.
Jul 05, 2012 | 10:20 AM CDT
Researchers Deliver Skin Treatments With Nucleic Acid Nanoparticles and Moisturizers
Researchers at Northwestern University have discovered a way to deliver gene regulation technology through topical moisturizers. Although the technology was initially investigated to treat melanoma, squamous cell carcinoma, psoriasis, diabetic wound healing and epidermolytic ichthyosis, it may also be used to treat wrinkles in aged skin.
Jul 03, 2012 | 03:33 PM CDT
Exploring the Depths of Percutaneous Penetration
By: Elsa Jungman, Université Paris-Sud
The Perspectives in Percutaneous Penetration (PPP) conference recently was held at the Palais des Congrès de La Grande Motte. Following are some highlights most relevant to the cosmetics and personal care industry.
Jul 03, 2012 | 02:51 PM CDT
A Synthetic Tissue-based In vitro Ocular Irritation Assay
By: Stewart J. Lebrun, Lebrun Labs, CA USA
The testing of personal care products for ocular irritancy ensures their safety, proper labeling and consumer satisfaction. In relation, there is a current demand for animal-alternative tests. Thus, described here is a method using synthetic tissue to test for mild, moderate and severe ocular irritation, including data validating this method as an effective means to screen products.
Jul 03, 2012 | 02:32 PM CDT
In Sight—Nano-sizing Chitosan for Wound Healing, Anti-aging
By: Katie Anderson (Schaefer), Cosmetics & Toiletr…
Mihaela Leonida, PhD, a professor of chemistry at Fairleigh Dickinson University, investigated the antibacterial properties of chitosan for cosmetic and pharmaceutical uses. She found that the material exhibited enhanced effects after being nano-sized.
Jul 03, 2012 | 02:23 PM CDT
A Dermatological View—Exploring Potential Differences in Percutaneous Penetration and Barrier Function Between Individuals of Different Ethnicity or Skin Color
By: Elodie Metral and Howard I. Maibach, MD, Unive…
The current understanding of percutaneous penetration and parameters that can influence it remains a sub judice area. Ethnicity or pigmentation, for instance, can be implied in percutaneous absorption for which several studies, described here, have been conducted to clarify their roles.
Jun 29, 2012 | 08:17 AM CDT
Propylparaben and Triclosan Found to Increase Allergy Risk in Children
A study conducted by Johns Hopkins Children's Center and funded by the National Institutes of Health supports the common "hygiene hypothesis" that some antibacterial chemicals and preservatives in hygiene products may make children more susceptible to food and environmental allergens.
Jun 29, 2012 | 08:13 AM CDT
Molecule Identified for Wound Healing and Psoriasis Applications
Researchers from the University of California, San Diego School of Medicine have identified a protein that may aid in the development of psoriasis and wound-healing treatments.
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Jun 13, 2012 | 10:15 AM CDT
A 'Look' at Curl in Eyelashes
Many visually perceptible phenomena are observed in hair, which arise from intrinsic attributes as well as the orientation of fiber assembly. The use of image analysis to further understanding of hair properties is the focus of Roger McMullen contribution to Alluredbooks’ Practical Modern Hair Science, and in the following excerpt, he briefly turns his attention to that part of the body that bares perhaps more than a little semblance to hair: the eyelashes.
Jun 04, 2012 | 02:56 PM CDT
A Dermatological View—In vitro Buffering Capacity of Human Skin Layers
By: Y. Zheng, MD, PhD, Third Affiliated Hospital o…
Previous studies demonstrate that skin buffering capacity can be measured in vitro by applying several concentrations of hydrogen chloride (HCl) and sodium hydroxide (NaOH) on skin and evaluating the pH change pre- and post-dosing. Here, the authors employed this technique to evaluate the buffering capacity of skin layers including intact SC, denuded SC and dermis skin samples.