Silicone ionic gels for skin‐compatible cosmetic formulations: A surfactant‐free approach to hydrophilic additive integration

OBJECTIVE: To develop and evaluate a novel silicone ionic gel (SIG) for personal care applications, designed to deliver enhanced texture, hydration, and compatibility with a wide range of cosmetic ingredients. METHODS: SIG was synthesized by swelling a fatty acid modified silicone elastomer in 68 wt% plant-derived solvent. The gel's architecture was engineered to form flexible, water-accessible channels. Performance was assessed through various complementary techniques including rheological testing, formulation studies, and skin hydration testing. RESULTS: SIG exhibited solid-like rheology, shear recovery, and surfactant-free incorporation of water and polyols. SIG-based formulations improved skin hydration by ~10% over PEG-based silicone gels. Demonstrated broad compatibility with hydrophilic and hydrophobic ingredients. Showed superior pigment dispersion without surface treatment, confirmed via optical microscopy. CONCLUSIONS: SIG is a multifunctional gel platform offering unique texture, long-lasting sensory effects, enhanced moisturization, and formulation flexibility. Its compatibility with diverse cosmetic ingredients and ability to host structured water make it a promising candidate for next-generation skincare and cosmetic products.