Cosmetic products containing titanium

Titanium dioxide is brilliant white, highly opaque, chemically inert, and nontoxic. Consequently, it finds wide uses as a pigment in paints and other coatings, in paper, sunscreens, cosmetics, and toothpaste. Almost all white-colored commercial products contain Ti02. ... 

Product contents alumina - up to 10 wt% (DSL) Kobo manufactures various grades having, in addition to titanium dioxide, substantial quantities of alumina, triethoxycaprylsi-lane, methicone, triisostearate, stearic acid to modify a surface to be compatible with different bases of cosmetic products Kobo also manufactures spherical UV filters (Diamid), which are small polyamide-12 spheres containing 50% titanium dioxide having particle size of 15 nm, which increases dispersion and eliminates whitening effect Sachtleben manufactures grades which contain alumina and stearic acid ... 

The structure of these products is uncertain and probably depends on pH and concentrations in solution. The hydroxyl or carboxyl or both are bonded to the titanium. It is likely that most, if not all, of these products are oligomeric in nature, containing Ti—O—Ti titanoxane bonds (81). Thek aqueous solutions are stable at acidic or neutral pH. However, at pH ranges above 9.0, the solutions readily hydroly2e to form insoluble hydrated oxides of titanium. The alkaline stabiUty of these complexes can be improved by the addition of a polyol such as glycerol or sorbitol (83). These solutions are useful in the textile, leather (qv), and cosmetics (qv) industries (see Textiles). 

Personal care products that are potential indoor sources of elements include home remedies, underarm antiperspirants, and cosmetics. Zinc oxide and titanium oxide are used in many commercial sunscreen products, and zinc oxide (as calamine) has long been recognized for its healing properties (Lansdovm and Taylor 1997). Aerosolized aluminum chlorohydrate, a common antiper-spirant formulation, is one of many potential indoor sources of Al (Fishbein, 1991). Sainio etal., 2000) determined Ni, Pb, Co, As, and Cr concentrations in commercial eyeshadows, and found that 75% of the colors contained more than 5 pg g of at least one of the elements. Lead-containing remedies and cosmetics used by some Middle Eastern and Asian communities are listed by ATSDR (2000). Two Mexican folk remedies which contain Pb are azarcon and greta, which are used to treat empacho, which is a colic-like illness (ATSDR, 2000). 

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