In the cosmetic industry, various types of particulate
materials are mixed to improve the product qualities. Talc,
mica, spherical materials, and pigments are generally used as
the main components of makeup products, particularly foundations.
Spherical organic and inorganic powders are widely used
as additives to improve the dispersibility and spreadability of
cosmetics on the skin [1]. Spherical silica powder with a
nanoporous structure is added as a base for cosmetic powders to
absorb sweat and sebum [2]. However, the effect of these
nanopores on various properties including the dispersibility and
extensibility of cosmetics has not been effectively understood
thus far. It has only been reported that under high humidity
conditions, the interparticle adhesion force between nonporous
particles is more easily influenced by a liquid bridge than that
between porous particles [3]. Spherical silica with diameters in