Recently, hydrogen-ethyl silicone oil has gained attention in the textile industry as a high-performance waterproofing agent. By forming a hydrophobic layer on fiber surfaces through chemical bonding, it provides excellent water resistance while maintaining breathability and softness. Compared to traditional fluorine-based waterproofers, it is more eco-friendly and wash-resistant, making it ideal for outdoor wear, sportswear, and medical textiles. As demand for sustainable manufacturing grows, hydrogen-ethyl silicone oil may become the leading choice in waterproofing technology.