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Biology
New in Biology (page 4 of 29)
Oct 01, 2012 | 01:26 PM CDT
A Dermatological View—Percutaneous Penetration of Amino Acids
By: Kaley Myer, New York University School of Medi…
Skin care products containing amino acids often promote the benefits conferred on the skin by these molecules. Natural amino acids found in the skin have been found to improve the health of skin through antioxidation, membrane stabilization and increasing skin’s natural moisturizing factor (NMF).
Sep 11, 2012 | 02:31 PM CDT
Comparatively Speaking: Gram-positive vs. Gram-negative Bacteria
By: Anthony J. O'Lenick Jr., Siltech LLC, and Kell…
Tony O’Lenick asks industry expert Kelly Dobos to explain the difference between Gram-negative and Gram-positive bacteria to understand the importance of selecting the proper preservative system for a cosmetic.
Sep 04, 2012 | 11:10 AM CDT
A Review of Skin Hypopigmentation and Contemporary Strategies to Achieve an Even Skin Tone
By: Cecilia Teran, Durant Scholz, Julie Cava, Kath…
Whether formulating for Asia, North America, Europe or Latin America, the cosmetic chemist will face one common demand in all these markets: an even skin tone. This article provides an overview of chemical and biological agents capable of causing hypopigmentation via interactions through different stages of the melanogenic pathway.
Aug 28, 2012 | 03:20 PM CDT
Comparatively Speaking: Pathogenic vs. Non-pathogenic Bacteria
By: Anthony J. O'Lenick Jr., Siltech LLC, and Kell…
To explain the difference between pathogenic and nonpathogenic bacteria, Tony O’Lenick looks to Kelly Dobos, who notes that nonpathogenic bacteria could become pathogens in immune-compromised hosts.
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.