Silica

Purity 100%. Silica is a solid substance that occurs naturally in various forms, such as sand, quartz and minerals. Its particles are porous and improve the smoothness of powders, while providing an excellent sensory feel. It is available as a natural mineral obtained from quartz deposits, or synthetically produced to a high level of purity for cosmetic use. The porous structure of the particles gives it a high adsorption capacity, which is key to its versatile use in cosmetics.

It acts as a texturising agent, giving cosmetic products a luxurious feel, an excellent sensory experience and exceptional softness on the skin's surface. It reduces the heavy feel of oil-based products and has a high capacity to absorb sebum and oils, helping to control excess sebum and mattify the skin. It works through the physical adsorption of sebum thanks to its porous structure, which absorbs up to 2-3 times its own volume in oil. It is used at concentrations of 1-10 % in powder and oil-based formulations to improve texture and skin feel.

It is recommended for oily, combination and acne-prone skin, where it effectively absorbs excess sebum and helps prevent clogged pores. It is also suitable for normal skin in powder products such as face powders and dry shampoos, where it provides a matte finish and smoothness. It is less suitable for very dry skin, where it may increase the feeling of dryness unless combined with moisturising ingredients.

In a study published in the Journal of Cosmetic Science (2015), silica at a concentration of 5 % in powder formulations reduced the visibility of pores by 25 % and improved skin mattness by 40 % after 4 weeks of application to oily skin. Further research in the International Journal of Cosmetic Science (2008) confirmed that porous silica absorbs 2,5 times more sebum than regular starch, significantly prolonging the matte effect of make-up.