MQ methyl silicone resin plays a central role in sunscreen products, and its efficacy is mainly reflected in three aspects: improving protective performance, optimizing the use experience, and enhancing product stability.：


1. Increase the SPF value and reduce the amount of physical sunscreens
MQ methyl silicone resin assists in improving the SPF value of sunscreen products through a physical film-forming mechanism.The three-dimensional mesh film formed can evenly wrap physical sunscreens (such as zinc oxide and titanium dioxide), reduce particle aggregation, and make sunscreens form a continuous and dense protective layer on the surface of the skin.Experimental data show that sunscreen products with MQ methyl silicone resin can increase the SPF value by 15%-20%, while the amount of physical sunscreen can be reduced by 30%.This synergistic effect not only enhances the sun protection effect, but also reduces the weight of the formula and avoids the phenomenon of “false whiteness”.


2. Strengthen waterproof, sweat-resistant and long-lasting protection
The hydrophobicity of MQ methyl silicone resin is the key to its waterproof and sweat-resistant properties.The silicon-oxygen bond in its molecular structure forms a hydrogen bond with the oily layer on the surface of the skin, and the contact angle of the film formed is greater than 90°, which has significant hydrophobicity.After water bath testing, sunscreen products containing MQ methyl silicone resin have an attenuation rate of less than 8% of SPF value after a 40-minute water bath, while the attenuation rate of traditional formulas exceeds 25%.In addition, its wear resistance and migration resistance ensure that the sunscreen film is not easy to fall off when rubbing or sweating, especially suitable for outdoor sports scenes.


3. Optimize formula stability and compatibility
The chemical stability of MQ methyl silicone resin allows it to adapt to a variety of environmental conditions.It has a wide temperature resistance range (-40℃ to 150℃), and can coexist with chemical sunscreens (such as Avobenzon and Oaklin) without interaction, avoiding crystallization and precipitation of the film or softening.At the same time, it has excellent compatibility with volatile silicone oil, polydimethylsiloxane and other raw materials, and can construct a hyaluronic acid-siloxane composite system to improve the ductility and skin adhesion of the product.This stability extends the shelf life of the product and simplifies the production process.


4. Collaborative application of innovative technologies
MQ methyl silicone resin is often combined with other film-forming technologies to achieve performance upgrades.For example, Perea's “Air Super film technology” uses a composite structure of hard film MQ resin and soft film (polysiloxane-15), which takes into account the film-forming strength and skin feeling silky; An Nai Sun's “Strong technology in case of water” uses MQ methyl silicone resin and lithium montmorillonite and other components to form a protective film enhanced in case of water.These technological breakthroughs have further expanded the application scenarios of MQ methyl silicone resin in high-end sunscreen products.