Recent in Biology (page 13 of 14)
Jun 13, 2012
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 4, 2012 | Y. Zheng, MD, PhD, Third Affiliated Hospital of Sun Yat-sen University, and H.I. Maibach, MD, University of California at San Francisco
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.
May 29, 2012
Researchers in Sweden have described a new structure and function of the stratum corneum at a molecular level, providing for a deeper understanding of skin diseases as well as the potential for large scale delivery via the skin.
Mar 30, 2012 | Katerina Steventon, PhD, FaceWorkshops
Sophisticated texture and fragrance as part of a formulation’s aesthetics are important to the discerning consumer, and skin type is the primary influence behind how the consumer perceives a skin care product. For example, consumers with dry skin require a richer moisturizer, even though the product should absorb quickly for a smooth finish.
Mar 23, 2012
Scientists at the Perelman Center for Advanced Medicine at the University of Pennsylvania have identified a protein that may lead to more effective treatments of male pattern baldness.
Mar 1, 2012 | Huiliang Li, Jahwa Cosmetics
Cosmetics based on traditional Chinese medicine (TCM) are formulated not only using TCM drugs, but also according to cultural theories and principles. This article serves as a review of TCM drug ingredients, history and principles, to assist product developers in understanding how they can be combined for products targeted to this specialized market.
Mar 1, 2012 | Melanie George, PhD, Avon Products Inc.
This second installment of a two-part article reviews the transient and resident microbial populations of the human ocular area and how they alter with age, environment and exposure to antimicrobial agents. Considerations for the formulator of how cosmetic products may affect and be impacted by the flora also are provided.
Mar 1, 2012 | Howard I. Maibach, MD, University of California School of Medicine; and Kristine B. Zitelli, MD, Kettering Medical Center.
It is possible that the transdermal transfer of applied hormones is of clinical relevance to personal care products. An estimated 1–3% of the population is allergic to a cosmetic product or ingredient contained therein.
Feb 29, 2012
A recent study conducted at Harvard Medical School and the Wyss Institute of Biological Inspired Engineering induced magnetism in yeast cells, the implications of which suggest potential application in future delivery systems or potentially for antioxidant benefits.
Feb 2, 2012 | Jack Surrette, SkinHealth Technology LLC
Vitamin D is critical to human health and the best source is from natural UVB light. However, contrary to the benefits gained are the well-documented damaging effects of sun exposure. In response, described here as a complementary approach to sun care is the development of an accurate gauge of UV exposure to produce optimum levels of vitamin D before sunburn results.
Feb 2, 2012 | Katerina Steventon, PhD, FaceWorkshops
Consumers are becoming more aware of the evenness of their skin tone, and it has become an important concern. Consequently, the primary focus of anti-aging skin care has shifted from reducing wrinkles to evening out skin pigmentation
Jan 3, 2012
Researchers from the Kunming Institute of Zoology and the Chinese Academy of Sciences have identified a number of antimicrobial peptides in odorous frogs.