search by
Copyright @ Pol J Cosmetol
Pol J Cosmetol 2015, 18(2): 132-137en  Evaluation of selected quality features of creams with addition of jojoba oil designed for dry skinMałgorzata Zięba, Anna Małysa, Anna Noga Katedra Chemii, Wydział Materiałoznawstwa, Technologii i Wzornictwa Uniwersytetu Technologiczno-Humanistycznego w Radomiu Summary Introduction. Jojoba oil is now a valued component of the cosmetics produced in form of emulsion. That liquid wax has a composition similar to human sebum. Due to the rich content of active ingredients it displays moisturizing, re-fatting, regenerating, bacteriostatic action and the effect of soothing the skin inflammation. Aim. The aim of the study was to evaluate the effect of concentration of jojoba oil on the selected physico-chemical properties of rich creams for dry skin. Materials and methods. The research material consisted in emulsions designed on the basis of the literature and own experience. The impact of jojoba oil concentration on: stability (thermal and load test), viscosity test (rotational viscometer, DV-I+ Brookfield) and moisturizing properties (CM 825 Corneometer, Courage Khazaka) on the original creams was discussed. A sensory evaluation of tested emulsions was also conducted (methodology invented). The point of reference in the evaluation was to compare the results of the research with those obtained of high-quality commercial product. Results. Jojoba oil in the proposed concentrations (c=1,5-7,5% wt.) does not result in a loss of stability of the emulsion produced. The function of the increasing concentration of the additive the viscosity of the cosmetics and their moisturizing effect also increases. Original creams exhibit favorable sensory parameters, especially in the case of participation of the jojoba oil at the level of 6.0% and 7.5%. Conclusions. There is a close relationship between the concentration of jojoba oil and the final physicochemical and functional properties of greasy creams for dry skin. The introduction of this wax to the cream recipe has a beneficial effect on the characteristics of the designed cosmetics. The results of the work may give rise to practical applications in formulating the composition of cosmetic products in the form of an emulsion. Key words: jojoba oil, creams for dry skin, quality |