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New in Skin Care (page 6 of 21)
Jan 05, 2012 | 03:09 PM CST
By: Michael J. Fevola, PhD, Johnson & Johnson
Guar hydroxypropyltrimonium chloride (GHPTC) is one of the most widely used cationic polymers in the personal care industry. GHTPC is employed primarily as a conditioning agent in shampoos and body washes. In many of these rinse-off products, it is also a critical deposition aid for the delivery of active ingredients and hydrophobic conditioning agents, e.g., silicones, to the skin and hair.
Dec 02, 2011 | 02:57 PM CST
By: Melanie George, PhD Avon Products Inc.
This first of two articles reviews transient and resident microbial populations of the human skin 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 normal human flora also are provided.
Oct 28, 2011 | 10:14 AM CDT
By: Michael J. Fevola, PhD, Johnson & Johnson
Benzoic acid (BA) is a leading choice due to its long and successful history of use preserving foods, drugs and cosmetics. Affirmed as GRAS (Generally Recognized As Safe) by the US Food & Drug Administration (FDA), BA and its sodium salt, sodium benzoate (NaB), are perhaps the most globally acceptable preservatives that have managed to avoid the controversy associated with many of the industry’s tried-and-true preservatives.
Oct 05, 2011 | 12:05 PM CDT
By: Isabelle Van Reeth, Xinyan R. Bao, Yasuhiro Ka…
Mastering formulating techniques with water-in-silicone emulsifiers can help cosmetic chemists create stable emulsions that combine distinctive aesthetics with improved performance. Here, the authors describe how altering parameters including the water to silicone/oil ratio, mixing processes, emulsifier levels, the nature of the external and internal phases, and the presence or lack of co-emulsifiers affect the characteristics of final formulations.
Oct 05, 2011 | 11:58 AM CDT
By: Kedar Kumthekar and Jayashree Nagarkar, PhD, I…
Tocopherols and tocotrienols are the major constituents of almond oil, safflower oil and palm oil. They are necessary for the normal growth and metabolism of healthy skin. These oils were formulated in nourishing skin care products and massage creams as part of stable o/w emulsions and were found to have excellent storage stability, flow properties, spreadability and moisturizing properties.
Oct 05, 2011 | 11:40 AM CDT
By: Mike J. Fevola, Johnson & Johnson
Carbomers, a family of crosslinked acrylic acid polymers, are essential ingredients in numerous products, including: pharmaceuticals; cosmetics and personal care items; household, industrial and institutional care products; printing inks; adhesives and coatings. This column will explore the chemistry and properties of carbomers that have earned them this well-deserved reputation.
Oct 05, 2011 | 11:37 AM CDT
By: Eric S. Abrutyn, TPC2 Advisors Ltd.
Acne vulgaris (acne) is a skin disease that can be caused by multiple chronic issues including: hyperkeratinization, sebaceous gland hyperplasia with seborrhea, Propionibacterium acnes proliferation and inflammation.
Sep 08, 2011 | 03:19 PM CDT
By: Bernard Idson, PhD, College of Pharmacy, The U…
Youthful skin is perceived as moist (or at least nondry), clean soft and virtually free of wrinkles. As consumers advance in age, concern about dry skin increases, and simply washing with soap and water gives way to us of products designed to treat the symptom, which all end up bearing some version of a moisturizer.
Sep 01, 2011 | 01:50 PM CDT
By: Giorgio Dell’Acqua, PhD, and Christian Wagner,…
Skin discoloration and excessive pigmentation due to increased melanin production is associated with skin inflammation and aging. Therefore, an extract rich in acetylated hydroxystilbenes from Rheum rhaponticum was combined with panthenyl triacetate to test in the melanogenesis pathway. The complex strongly reduced melanogenesis and melanin accumulation in human skin explants, decreased melanin content in pigmented spots, increased skin brightness and enhanced skin radiance on the face of human volunteers in a double-blind clinical study.
Sep 01, 2011 | 01:45 PM CDT
By: Marida Bimonte, Antonietta Carola, Annalisa Ti…
Coffea species have been widely evaluated for effects including oxidative stress protection and immunomodulation. The present study therefore evaluates the cosmetic activity of an extract obtained from cultured Coffea bengalensis stem cells. Results showed the extract imparted hydration activity in the keratinocytes, stimulated collagen synthesis in the fibroblasts and enhanced adipocyte differentiation starting from mesenchymal precursor cells.