Recent in Biology (page 3 of 9)

Columbia Researchers Uncover Touch Sensory Mechanisms

A study published in Nature highlights how a team of Columbia University Medical Center researchers have uncovered the mechanisms behind touch; i.e., how humans feel details and textures.

New Findings for Anti-aging in Hair and Scalp

Anti-aging hair care products address concerns such as thinning, coloring, breakage and drying. At the Cosmetics & Toiletries Summit, an entire hair research track will feature speakers Popescu, Davis, Kazin and Westgate on new biological and chemical considerations for this growing market.

Researchers Identify Pathway to Regulate Telomeres

Cancer researchers at the Salk Institute for Biological Studies in La Jolla, California, have identified a mechanism involved in the lengthening of telomeres; cosmetic researchers often look to this field for novel answers to skin aging.

Carotenoids for Dietary Photoprotection

Sun exposure leads to the production of free radicals in skin and to damage to elastin and collagen, resulting in premature aging. Studies of consuming carotenoid-rich fruits and vegetables have shown lower incidences of skin pathology. Carotenoids are among the most efficient natural scavengers of free radicals and may be used as oral sun protection, as is discussed here.

New Findings and the Impact of Infant Skin Microbiota on Product Development

Recent studies demonstrate that the skin microbiome of infants actively changes during the first year of life, along with evolutions in skin structure, biochemical composition and function. These dynamics in the development of a healthy skin microbiome must be taken into consideration when designing products for baby skin care.

Hypersensitive Skin: Classification and Potential Risk from Cosmetic Formulations

Considering the potential for reactions between cosmetics and hypersensitive skin, the present article will focus on this skin type; first by outlining mechanisms of type I and IV hypersensitization, then by focusing on type I immunogenic vs. non-immunogenic urticaria. Potential urticariogens in cosmetics are considered, and suggestions for future direction are given.

Growth, Senescence, Canities, Bleaching and Anti-aging in Hair

The continued use of hair bleaches and dyes to combat the onset of gray hair creates a greater demand for hair products that deliver the desired effect while facilitating repair. Molecular biology promises new strategies in combating the aging process of hair cells, with the paradigm shift toward understanding the living component of the hair follicle.

A Dermatological View--Moisturizer Efficacy: Evidence on Preventing and Treating Irritant Dermatitis

As an update to a previous overview by Zhai and Maibach, publications from 1992 to 2006 were reviewed quantitatively to examine moisturizer effectiveness. Pub Med, Science Citation Index and Embase were searched for: moisturizer, irritant dermatitis, prevention and treatment. Results indicated the extension of the work summarized justifies priority.

Assessing the Safety of Parabens: Percutaneous Penetration and Risk Analysis

In cosmetics, parabens are widely used due to their low cost and efficacy. In recent years, however, some reports have claimed that these materials exhibit estrogenic activity, which has led to attempts to replace them in formulations. This article reviews penetration studies of parabens spanning the past 20 years to determine whether they pose a risk to human health.

The Controversial Influence of Moisturizers on Skin Water Barrier

As is described here, moisturizers can influence the properties and structure of corneocytes by influencing the SC and consequently, the skin water barrier function. This hydrative influence of moisturizers could be beneficial as well as destructive toward skin barrier function.

Study finds UV Nail Lamps to Be Safe

Researchers from Rapid Precision Testing Laboratories have found that UV nail lamps are safe and to not cause cancer. After the lamps became popular in the last few years for curing non-chip gel nail polish, many began to question their safety.

New Research Highlights Role of Elastin in Stretch Mark Formation

Personal genetics company 23andMe has conducted a genetic study on striae distensae (stretch marks) to identify genetic markers for the skin imperfections and determine why some individuals are more susceptible.