R. Keyhani

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Oxidativer Streß (UV-Licht, freie Radikale) ist einer der wesentlichen Auslöser für vorzeitige Hautalterung. Als aktive Schutzmechanismen gegen diese oxidativen Schäden, die besonders im Alter zunehmen, können Koenzym Q10 (CoQ10), aber auch exogen applizierte Antioxidanzien wirken. Unsere vergleichenden In-vitro- und In-vivo-Untersuchungen an Haut alter(More)
Oxidative stress (UV irradiation, free radicals) plays a significant role in aging. Coenzyme Q10 (CoQ10) and exogenously applied antioxidants can significantly reduce the formation of oxidative stress with increasing age. In our in vitro and in vivo experiments concerning the parameters of ultraweak photon emission (UPE), intracellular thiol status,(More)
The assessment of odours and in particular of human axillary odour is an integral part of the research and development of deodorant and anti-perspirant products. One method to perform odour assessment is the odour evaluation that is carried out by experts, designated as odour testers or sniffers. Product development decisions are therefore based on human(More)
OBJECTIVES Stress sweating can occur in everyday situations independently of thermally-induced perspiration. It is triggered by emotionally challenging situations and leads to underarm wetness and a characteristic unpleasant malodor. In this study, we aimed to determine the long-term efficacy of three unperfumed antiperspirant (AP) formulas for different(More)
A time- and cost-effective sweat casting method using the forearm as test site to assess the efficacy of several anti-perspirant formulations with a low number of test subjects has been evaluated and qualified. The imprint sweat casting method is based on a 2-component silcone-imprint technique to measure the efficacy of more than eight products in parallel(More)
BACKGROUND/AIM Mid-infrared spectroscopy is a versatile method for in vivo investigation of skin after topical treatment with skin care products. METHODS FTIR-spectrometer (Bruker Optics) with a flexible silver halide fibre probe (Infrared Fiber Sensors). RESULTS Absorbance spectra from 700 to 3000 cm(-1) have been recorded to gain information about(More)
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