The procedures have been developed for an atomic absorption spectrophotometric determination of lead in cosmetics. Aluminium powder, pigments of aluminium compound, BiOCl and some iron oxides are offered problems to in dithizone test, and the developed procedures for these materials are described. Faster determinations of trace amount of lead in cosmetics such as lipstick containing BiOCl and spray products are studied. The official dithizone method can be replaced almost by those procedures which are faster and simpler.

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A closed patch test is one of the most important method to assess the safeties of cosmetics. But considering about the primary irritation of a shampoo, 24 hours or 48 hours contact is very severe to the human skin and gives suffer to the subject. in this report patches were removed 5 and 20 hours. the rsults show there are rank correlation between 5 hours and 20 hours closed patch test. it is enough to get a decision of safety of a shampoo by 5 hours instead of 20 hours patch contact.

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The method has been developed for fhe quantitative analysis of polar materials incorporated in cosmetic products.
With the column, Chromosorb 101, this analytical method shows excellent separation in water, alcohols, humectants, lower fatty acids etc.. The recovery of propylene glycol and glycerol for the model system was 92.6-102.1%
In addition the high thermal stability of Chromosorb 101 enables us to apply gas-solid chromatography to the analysis of mixture containing relatively high boiling compounds.
It is considered that this method can be effective for the quantitative analysis of cosmetic products

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