Composition of Commercial Cosmetic Clay and Suitability of Latvian clay for Cosmetic Puropses
2012
Jana Vecstaudža, Agnese Stunda-Zujeva, Zilgma Irbe, Līga Bērziņa-Cimdiņa

Clay is used for cosmetic and medicinal purposes for thousands of years because of well known clay properties. Analysis about commercial cosmetic clay products available on Latvia market is done by gathering information about manufacturer country, clay color, product type and price. Mineral and granulometric composition of some cosmetic clay were determined by X-Ray diffraction analysis (XRD) and laser diffraction method. The study evaluates Latvian clay suitability for cosmetic purposes. Data analysis of cosmetic clay available on the market showed that product types range from facial masks to shampoos. On cosmetic product packages clay color is stated twice more often than a specific clay mineral. In traditional medicine clay therapeutic properties are classified by clay colour. There are no data in scientific literature about clay color effect on therapeutic properties. XRD analysis of 12 clay containing products without additives showed that products contain variety of clay minerals (illite, smectite, kaolinite, illite/smectite, chlorite) and quartz. XRD analysis demonstrated that information about mineral composition on clay cosmetic products is partially incomplete. All samples contained illite which is the most abundant clay mineral in Latvia. Particle size distribution of analyzed cosmetic clay are broad monomodal. Clay fraction amount in commercial cosmetic clay varies between 25 till 54%. Comparision of literature data and data obtained in this study on mineral and granulometric compositions of cosmetic clay and Latvian clay showed that Latvian clay is suitable for cosmetic and medicinal purposes. For complete characterization of Latvian clay usage in cosmetic further studies are needed.


Keywords
cosmetic clay, mineral composition, granulometric composition

Vecstaudža, J., Stunda-Zujeva, A., Irbe, Z., Bērziņa-Cimdiņa, L. Composition of Commercial Cosmetic Clay and Suitability of Latvian clay for Cosmetic Puropses. Materials Sciences and Applied Chemistry. Vol.26, 2012, pp.42-48. ISSN 1407-7329. e-ISSN 2255-8713.

Publication language
Latvian (lv)
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