NATURAL OILS AND WAXES IN STICK BASES 101 of stick formulations than do softening point and drop point determination combined without DSC measurements (Table III). CONCLUSION It can be concluded that among the natural oils and waxes studied, coconut oil, jojoba oil, and carnauba wax seem to have the greatest infl uence on the thermal parameters of the stick bases. Furthermore, upon taking into consideration the softening point and drop point determinations and DSC measurements, strong correlations are observed between the softening point and drop point measurements. ACKNOWLEDGMENTS This project was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences (M. B.). The authors thank Ágnes Szabó and Mária Labancz for their help during the measurements. REFERENCES (1) R. Kleiman, D. A. Ashley, and J. H. Brown, Comparison of two seed oils used in cosmetics, moringa and marula, Ind. Crop. Prod., 28, 361–364 (2008). (2) R. Buchwald, M. D. Breed, and A. R. Greenberg, The thermal properties of beeswaxes: Unexpected fi ndings, J. Exp. Biol., 211, 121–127 (2008). (3) M. Rajin, A. Bono, and H. C. Mun, Optimisation of natural ingredient based lipstick formulation by using mixture design, J. Appl. Sci., 7, 2099–2103 (2007). (4) S. Shaikh and K. Bhise, Formulation and evaluation of medicated lipstick of allantoin, Asian J. Pharm., 2, 91–95 (2008). (5) D. S. Ogunniyi, Castor oil: A vital industrial raw material, Biores. Technol., 97, 1086–1091 (2006). (6) Y. L. Dréau, N. Dupuy, V. Gaydou, J. Joachim, and J. Kister, Study of jojoba oil aging by FTIR, Anal. Chim. Acta, 642, 163–170 (2009). (7) A. O. Barel, M. Paye, and H. I. Maibach, Handbook of Cosmetic Science and Technology (Marcel Dekker, New York, Basel, 2001), pp. 157. (8) C. P. Tan and Y. B. C. Man, Differential scanning calorimetric analysis of palm oil, palm oil based prod- ucts and coconut oil: Effects of scanning rate variation, Food Chem., 76, 89–102 (2002). (9) European Pharmacopoeia, Ed. 5.0 (Council of Europe, Strasbourg Cedex, France, 2004). (10) European Pharmacopoeia, Ed. 3.0 (Council of Europe, Strasbourg Cedex, France, 2001).