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Pol J Cosmetol 2015, 18(1): 82-87pl  Use of peat in cosmeticsJoanna Płocica 1/, Barbara Tal-Figiel 2/, Wiesław Figiel 2/ 1/ Krakowska Wyższa Szkoła Promocji Zdrowia w Krakowie 2/ Katedra Inżynierii Chemicznej i Procesowej, Wydział Inżynierii i Technologii Chemicznej, Politechnika Krakowska w Krakowie Summary Introduction. Peat is a natural resource which is created as a result of humification of dead bog plants, such as moss, fern and seed plants. Depending on the formation of turf deposit, composition of plants and ecological conditions, the following types of peat bogs are distinguished: high, low and transitional. Aim. The aim of the work was the conduct of sensory studies, i.e. the colour, the smell, the consistency and the application on skin of cosmetic preparations from the Laboratorium Kosmetyków Naturalnych Sp. z o.o. "Treasures of Nature" ("Skarby Natury") series, along with the conduct of rheological measurements and indication of close correlation between rheological studies and sensory analysis. Material and methods. The sensory analysis was conducted on 12 people with previously verified sensory sensitivity. Rheological studies were performed with the use of rotational rheometer HAAKE RS75, using the cone-plate layout with the diameter of 60 mm and the angle of 0.5°. Rheological properties were examined in temperatures of 20°C, 32°C and 37°C. As the basic test, flow curve and apparent viscosity curve were performed. In the subsequent stage, microscopic studies on the size of particles in the dispersed phase were performed with the use of Jenamed 2 microscope. Results. Peat tonic has lightest consistency, whereas peat mask has heaviest consistency out of four examined cosmetics. Tonic and peat cream are easiest to spread on skin, whereas it is most difficult to spread the peat mask. Conclusions. It can be stated that there is a close relation between measurements of sensory analysis and rheological studies on cosmetic preparations of Farmona. From microscopic observations, it is possible to read the mechanism of making the emulsion and to observe the movements in this type of system which resemble the movements of live protoplasm. Key words: sensory analysis, rheological studies, microscopic analysis |