Recent in Biology (page 4 of 27)

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.

Researchers Identify Molecule Causing Sunburn Pain

A team of researchers from Duke University, Rockefeller University and the University of California San Francisco have identified the gene that causes pain in sunburned skin.

Researchers Uncover Regenerating Properties in Sweat Gland Stem Cells

In his study on sweat glands, Asst. Prof. Krzysztof Kobielak, PhD, MD, and fellow researchers uncovered some interesting findings about sweat gland stem cells that may lead to better treatments for excessive sweating conditions and tissue regeneration.

Skin and Ocular Flora: The Effect of Formulation, Part 2

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.

Traditional Chinese Medicine in 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.

Rosacea: Cause, Triggers and Treatment

Rosacea is a common but little-known disorder of the facial skin that affects an estimated 14 million Americans. In fact, rosacea is becoming increasingly widespread as the baby boomer generation enters the most susceptible ages for its development.

Skin Biology Review: L Neuropeptides, Immunology and More

This article summarizes 31 papers recently published on skin biology. Among the topics are neuropeptides, toll-like receptors and a consideration of allergic reaction versus preservative action in finished products.

The Probiotic Nature of Normal Microflora

Recent studies are revealing that many of their actions are like those of the normal microflora present in the intestinal tract and on the skin and mucous membranes. This article focuses on some similarities between probiotics and normal skin microflora.

In vitro Buffering Capacity of Human Skin Layers*

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.

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