Recent in UV Filter (page 5 of 6)
Jun 1, 2007 | Ian L. Gatfield, Jens-Michael Hilmer and Heinz-Jürgen Bertram, Symrise GmbH & Co. KG
The naturally occurring ethyl ester of p-methoxycinnamic acid can undergo efficient enzymatic conversion into the corresponding isoamyl ester via lipase catalysis using natural isoamyl alcohol as reactant. This transesterification provides a natural route to a popular sunscreen filter.
Feb 1, 2007 | G. Wakefield, J. Stott and A. Duggan, Oxonica Materials Ltd.
Photoinduced degradation and activity in chemical and mineral UV-absorbing actives results in a decrease in UVA protection during topical use, with a corresponding risk of skin pathologies in the user. New developments in UV absorbers are shown to maintain a stable, high level of UVA protection during use.
Dec 28, 2006 | A. Plantivaux, Sophia Antipolis University; E. Bauza, T. Marchand, C. Dal Farra and N. Domloge, Vincience Research Center
In the presented studies, researchers investigated the effect of the (Cys-Gly)2 dimer peptide against UV-induced oxidative stress on cultured human fibroblasts. The dimer peptide was found to act on a range of mechanisms involved in cell defense against such stress.
Dec 28, 2006 | Sirui Jiang, Danyi Quan and Howard Maibach, MD
Skin cancer is diagnosed in more than 1.5 million people yearly and more than 90% of the cases are believed to be related to sun exposure. This article discusses current knowledge on the biological process of UV-induced skin damage. Of particular interest is the role of antioxidants in the prevention of carcinogenesis.
Jun 1, 2006 | Bud Brewster, Cosmetics & Toiletries
Here’s the story of organic UV filters. They absorb a packet of energy called a photon from incoming UV radiation and hold it briefly in an excited state before releasing it as heat or a lower-energy photon or both, and returning to the unexcited or ground state.
Jun 1, 2006 | Nadim A. Shaath, PhD, Alpha Research & Development, Ltd.
Despite regulation limitations, more and more new ingredients, products and techniques for the sun care industry have been introduced. The regulatory status of currently approved UV filters and the introduction of new and improved UV filters will be reviewed.
Apr 27, 2006 | Lakshmi Prakash, PhD, K.S. Satyan, PhD and Shaheen Majeed, Sabinsa Corp.
A natural extract that affords comprehensive “bioprotection” is derived from turmeric root and offers versatile applications in personal care formulations. Its salient feature is multifunctionality in anti-aging compositions.
Apr 26, 2006 | David C. Steinberg, Steinberg & Associates
The author reports on frequency of use of 17 organic UV filters in nearly 18,000 formulations voluntarily reported to the United States government as of May 2003.
Apr 26, 2006 | Rainer W. Christ, CIC GmbH
Modern microfine TiO2 products attenuate both UVA and UVB. The ingredient is practically chemically inert and “non-penetrating” and can be regarded a safe cosmetic raw material.
Apr 24, 2006 | Wu Keke and She Jianrong, Department of Chemical Enginerring, Dalian Insittute of Light Industry; Wang Haiying, Institute of Nuclear Technology, Tsinghua University
Experiments based on UV absorption measurements show that water extracts of several Chinese medicinal plant materials are able to up-regulate the biosynthesis of melanin in vitro.
Apr 18, 2006 | Sebastien Mongiat, Bernd Herzog, Cyrille Deshayes, Peter König, and Uli Osterwalder
Efficient broadspectrum UV protection is provided by bisethylhexyloxyphenol methoxyphenyl triazine (BEMT), an oil-soluble, photostable UV absorber that offers improved UVA protection and synergy with UVB filters.
Apr 18, 2006 | Laetitia Moreau, Sylvie Bordes, Maud Jouandeaud and Brigitte Closs, SILAB S.A.
The authors studied the effect of UV on cell adhesion and expression of fibroblast integrins–two factors on which skin firmness depends. An Oryza sativa extract reduces the UV effect on these factors.