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Anti-aging cosmetics - latest activ substances of natural origin
Fleková, Andrea ; Vítová, Eva (referee) ; Souralová Popelková, Miriam (advisor)
The present diploma thesis is focused on the selected anti-aging substances in cosmetic products. The literature research provided us with the knowledge of essential skin characteristics and factors influencing the aging process. Furthermore, the thesis describes the basic physical forms of cosmetic products, the basic cosmetic materials and the current trends in the usage of anti-aging substances. The experimental part subsumes altogether four physical forms of cosmetic products – tonics, serums, masks and creams. In this work was testid a new anti-aging compound, developer by French company SOLABIA, which provided the company Miša a Harašta s.r.o. (M+H). It has tested four components: Fucogel, Camaderm Gly, Viniderm and Omega Ceramid. These anti-aging substances were addend to the four technology cosmetic form, which were prepared in our laboratory. Subsequently, the pH stability of the products was measured together with the rheological measuring and skin hydration measuring. All of the samples proved to be pH stable. The highest stability of viscosity and consistence was identified for masks and creams. It was found out that the added anti-aging substances have no impact on the stability of pH, viscosity and consistency. The skin hydration measuring proved that the anti-aging substances Vinidem and Camadem Gly have the greatest moisturising qualities.
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Methods of evaluation of selected cosmetics
Sládková, Veronika ; Sýsová, Lenka (referee) ; Zemanová, Jana (advisor)
This thesis is devided into two parts. The aim of the first – theoretical – part was to become acquainted with the composition, the importance and the physiology of the skin, with different types and masks in connection with the skin care. The theoretical part deals with the function of particular ingredients contained in selected cosmetics described in research literature and also with methods from which cosmetics can be evaluated. Olive oil is the most described component because it is an important ingredient for all cosmetics this study deals with. The second – experimental – part is focused on evaluating the influence of hydratation of these cosmetics. Hydratation was measured by Courage & Khazaka MPA 5 device, which is based on the capacitance measurement of the condenser. Then, the methodic evaluation of hydratation was made up and the aim of the experimental part was to proove this methodic´s accuracy and to elaborate acquired results.
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Bacterial cellulose based facial mask with antioxidant property
Borová, Šárka ; Hoová, Julie (referee) ; Kovalčík, Adriána (advisor)
This final thesis deals with the preparation of a cosmetic facial mask based on bacterial cellulose. The motivation of this work was to prepare a cosmetic mask with antioxidant properties. To obtain bioactive substances with antioxidant activity, extracts from the rosehip fruits (Rosa Canina L.) with different weight dosages of rosehips and different preservatives were prepared. These rosehip extracts were subjected to spectrophotometric methods, thanks to which the total contents of polyphenols, flavonoids and total antioxidant activity were determined. It was proven that the content of the determined substances increases with the proportion of weighted rose hips and the highest contents of antioxidant substances were measured in extracts with a weight of 25 g of rose hips. Subsequently, these selected extracts were modified into several samples of bacterial cellulose. After the modification of the substances, it was demonstrated that bacterial cellulose is a suitable material for absorbing bioactive substances into the structure of individual analyzed samples. It was found that bacterial celluloses in the form of hydrogel and lyophilized bacterial cellulose were able to absorb the largest amount, of bioactive substances with antioxidant properties. On the other hand, the samples of dry bacterial cellulose and bacterial cellulose with an alginate component absorbed active substances the least. Furthermore, analysis using a Visioscope device revealed that the facial cosmetic mask based on bacterial cellulose in the form of hydrogel could potentially have not only antioxidant but also hydrating effects on the skin.
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Anti-aging cosmetics - latest activ substances of natural origin
Fleková, Andrea ; Vítová, Eva (referee) ; Souralová Popelková, Miriam (advisor)
The present diploma thesis is focused on the selected anti-aging substances in cosmetic products. The literature research provided us with the knowledge of essential skin characteristics and factors influencing the aging process. Furthermore, the thesis describes the basic physical forms of cosmetic products, the basic cosmetic materials and the current trends in the usage of anti-aging substances. The experimental part subsumes altogether four physical forms of cosmetic products – tonics, serums, masks and creams. In this work was testid a new anti-aging compound, developer by French company SOLABIA, which provided the company Miša a Harašta s.r.o. (M+H). It has tested four components: Fucogel, Camaderm Gly, Viniderm and Omega Ceramid. These anti-aging substances were addend to the four technology cosmetic form, which were prepared in our laboratory. Subsequently, the pH stability of the products was measured together with the rheological measuring and skin hydration measuring. All of the samples proved to be pH stable. The highest stability of viscosity and consistence was identified for masks and creams. It was found out that the added anti-aging substances have no impact on the stability of pH, viscosity and consistency. The skin hydration measuring proved that the anti-aging substances Vinidem and Camadem Gly have the greatest moisturising qualities.
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|
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Methods of evaluation of selected cosmetics
Sládková, Veronika ; Sýsová, Lenka (referee) ; Zemanová, Jana (advisor)
This thesis is devided into two parts. The aim of the first – theoretical – part was to become acquainted with the composition, the importance and the physiology of the skin, with different types and masks in connection with the skin care. The theoretical part deals with the function of particular ingredients contained in selected cosmetics described in research literature and also with methods from which cosmetics can be evaluated. Olive oil is the most described component because it is an important ingredient for all cosmetics this study deals with. The second – experimental – part is focused on evaluating the influence of hydratation of these cosmetics. Hydratation was measured by Courage & Khazaka MPA 5 device, which is based on the capacitance measurement of the condenser. Then, the methodic evaluation of hydratation was made up and the aim of the experimental part was to proove this methodic´s accuracy and to elaborate acquired results.
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