Very large and growing as we know Based on the type, the global fumed silica market is categorized into Hydrophilic Fumed Silica and Hydrophobic Fumed Silica. In 2021, the hydrophilic fumed silica segment dominated the market with the largest market share of 59% and market revenue of 945.7 billion.
https://www.sphericalinsights.com/reports/fumed-silica-market#:~:text=Based%20on%20the%20type%2C%20the,market%20revenue%20of%20945.7%20billion.