Opaque Polyethylene Microspheres: Applications in Cosmetics and Skin Care
Opaque microspheresare a superior opacifying agent and provide maximum hiding power with just a monolayer of microspheres as small as 40 micron in diameter. They can be manufactured in any color imaginable and even combinations of two differently colored hemispheres. Opaque microspheres provide an attractive and functional solution to cosmetics, personal care, and skin care industries.
Unique advantage of opaque microspheres in cosmetics is that
maximum hiding power is achieved with one invisible and feather-light
layer - revolutionizing make-up products. Sphericity and particle size
uniformity are responsible for the ball-bearing effect in creams and
lotions resulting in luxury feel and silky texture. Exceptional
smoothness of spherical microparticles dramatically enhances the tactile
experience of a cosmetic product. Opaque microparticles can be used to minimize the appearance of fine lines and wrinkles by both filling them and scattering light.
They can be also used as gentle exfoliating agents. Red, green,
blue, yellow or even multi-color microspheres make a product that is not
only functional but fun and exciting by adding a hint of color,
sparkle, or even a changing color effect.
Opaque microspheres are made from low molecular weight
polyethylene. The polymer is pigmented to achieve the exact color and
opacity level desired by the customer. The spheres are available in
particle sizes from 10-1200 micron and are supplied as a dry powder that
can be easily mixed into paints, adhesives, creams, lotions, and oils.
Just like clear polyethylene microspheres, opaque grades are inert in
most solvents and have a sharp melting point at 114C -120C depending on
the molecular weight of the material used.
"While sourcing materials for one of our projects, we searched the
globe for microspheres that were truly opaque in a monolayer
arrangement. We found a handful of companies that sent us samples, but
under the microscope we saw poor opacity, dust, debris, and
non-spherical particles. Frustrated with the lack of opaque microspheres
on the market, we developed our own proprietary process to produce
polymer microspheres with tightly controlled particle size, opacity,
color, sphericity, as well as internal and surface charge and magnetic
properties," says Brian Gobrogge, CEO and co-founder of Cospheric, a
microtechnology company in Santa Barbara, CA.
High quality opaque polyethylene microspheres are now available in
bulk quantities and reasonable prices to scientists and engineers who
would like to add color and functionality to new generations of their