Cosmetic Applications
The cosmetics market lends
itself to the XRF method since many additives in cosmetics are mineral
or metallic in nature, or are organics with a heavier element attached
that is measurable by XRF. Here are a few well-known applications.
Titanium
and Zinc in Sunscreen
Titanium dioxide is used in most sunscreens to help prevent UV radiation burns.
The concentration is high and easily measured by XRF. Zinc is also used in
sunscreens as a UV blocking agent. back to top
Iron,
Titanium, and Zinc in Base Makeup
Flesh colored base makeup's usually contain black iron oxide, red iron oxide,
and titanium dioxide and/or zinc oxide which are white. The ratio of these
oxides determines the shade. XRF has been used to measure total iron, and other
major components. back to top
Toxic
Metals in Cosmetics
Cosmetic component are usually analyzed for toxic components to ensure that
they are safe. Many of the more sensitive WDXRF and EDXRF analyzers can be
used for measuring toxic metals such as lead, cadmium, mercury, and arsenic
in cosmetic products. back to top
Metal
Dyes in Cosmetics
Some of the brightly colored dyes like those in eye shadows and fingernail
polishes contain metallic dyes that can be measured by XRF. back
to top