Silica is a compound that can appear in more than one form, and those forms have different properties (Unknown, 2019). In pet products, silica may be present as part of ingredient processing, as a naturally occurring component of certain raw materials, or as a deliberate addition in a supplement. That variety is one reason online advice can feel inconsistent.
For cat owners, the useful question is: what role is silica playing in the overall plan for visible condition? The coat and skin are “front page” signals of wellbeing. A thoughtful routine aims for a clean, even look—less dullness, less rough texture, and a finish that reads as cared-for—without chasing extremes or miracle claims.