Recent in Biology (page 9 of 14)

Sensitive Skin Syndrome: Relationships Among Factors

Sensitive skin is a subjective, lay term that many consumers claim affects their comfort when using products that contact their skin. Approximately one-half of individuals surveyed in two research studies considered themselves to have sensitive skin. Researchers know this condition exists, yet it is notoriously difficult to quantify in a meaningful and uniform way.

Transfollicular Delivery: The (W)hole Story

Various routes of entry into the skin exist, both through the SC as well as eccrine and transfollicular shunt routes. While these shunt routes may comprise only 0.1% of the skin surface, some chemicals that cannot penetrate the SC have penetrated via these routes. As a consequence, transfollicular research is being revived.

Smoking and Premature Aging

Multiple environmental factors are associated with facial aging; evidence suggests that smoking 20 cigarettes per day is equivalent in effect to almost 10 years of chronological aging. Therefore, lifestyle recommendations to stop or delay facial skin aging are also very useful in promoting public health.

The Hardening Phenomenon in Irritant Contact Dermatitis: Cosmetic Implications

Irritant contact dermatitis (ICD) is common and poses a significant problem in high risk populations including hairdressers, health care workers, metal-working professionals and cleaning specialists.

Hormesis and Cosmetic Dermatology

This review examines hormetic effects of various agents on skin biology. Recognition of this emerging biological phenomenon in dermatology could lead to markedly improved integrative assessments of animal/human skin responses to toxic substances and pharmacological agents, as well as endogenous agonists.

A Review of Anti-irritants, Part II: Moisturizer, Anti-irritant Efficacy and Overall Interpretation

his column is the second of a two-part series about anti-irritants. Part I appeared in the March 2011 issue and covered anti-irritants, irritant reaction and barrier cream efficacy. The present column summarizes the efficacy of moisturizers and anti-irritant substances and provides an overall interpretation.

Desmosomes: Adhesion Answers to Skin

Garrod became interested in cell adhesion after reading a paper on the differential adhesion hypothesis by Malcolm Steinberg, and he more recently discovered the mechanism that allows these structures to tightly bind cells together.

A Review of Anti-Irritants, Part I: Barrier Cream Efficacy on Contact Dermatitis*

This column is the first of a two-part series about anti-irritants. Part two will appear in the April 2011 issue. While the first part covers anti-irritants, irritant reaction and barrier cream efficacy, part two will summarize the efficacy of moisturizers and anti-irritant substances and provide an overall interpretation of both parts I and II.

Sea Cucumber Peptides to Affect Collagen

Sea cucumbers, considered a delicacy in East and Southeast Asia, may not be pleasing to the eye but could be pleasing to the complexion. These slippery creatures belong to the animal group of echinoderms, which possess an adaptive feature called mutable connective tissue. While investigating this phenomenon, Maurice Elphick, PhD, and his research team from Queen Mary University of London’s School of Biological and Chemical Sciences not only identified the genes that encode the peptides to make this tissue stiffen and soften, but also have hypothesized that one of these peptides may be used in anti-aging skin care

The Professional Face of Skin Care

Skin care practice is often culturally ingrained and guided by ritual. There are numerous professions concerned with the skin: the dermatologist, the dermatology nurse, the esthetician and even the skin care sales assistant. Their expertise, approach, perspective and degree of authority in skin care decision-making is different. Yet, finding common denominators is beneficial, and all of these professionals are skin care consumers themselves.

The Professional Face of Skin Care

Skin care practice is often culturally ingrained and guided by ritual. There are numerous professions concerned with the skin: the dermatologist, the dermatology nurse, the esthetician and even the skin care sales assistant. Their expertise, approach, perspective and degree of authority in skin care decision-making is different. Yet, finding common denominators is beneficial, and all of these professionals are skin care consumers themselves.

Potential Differences in Percutaneous Penetration, Barrier Function Between Individuals of Different Ethnicity or Skin Color

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.

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