Low Viscosity (5–100 cSt)
The key advantages of low-viscosity dimethicone are its low surface tension and excellent fluidity, making it particularly suitable for applications requiring rapid coverage and a silky feel.

In personal care, low-viscosity silicone oils can be used in lotions and creams to help products spread quickly on the skin, creating a thin, smooth "velvety" film and avoiding a sticky feel. In shampoos and conditioners, they quickly coat the hair cuticle, making it smooth and easy to comb. In cosmetics like foundation and lipstick, adding low-viscosity silicone oils significantly improves spreadability and prevents sticking and clumping.

In the electronics and electrical sector, precision components such as mobile phone camera modules or sensors require potting materials with excellent permeability. Low-viscosity silicone oils can penetrate even the smallest gaps, forming a uniform insulating layer while avoiding incomplete filling caused by high viscosity.

In textile finishing, low-viscosity silicone oils can be used to treat synthetic fabrics such as polyester and nylon. Its excellent penetration allows it to penetrate deep into fabrics, imparting a silky, smooth feel while reducing static electricity buildup.

Medium Viscosity (100–1000 cSt)
Medium-viscosity dimethicone fluid offers moderate film thickness and strong adhesion, making it suitable for applications requiring both lubricity and protection.

In daily chemical products, medium-viscosity silicone fluids can be used in high-end face creams or body lotions, helping to form a light, breathable, yet moisture-locking film on the skin's surface, making them particularly suitable for dry skin or winter use. In conditioners and hair masks, they can deeply repair damaged hair from perms and dyeing, enhancing its smoothness and shine.

In electronic protection applications, such as potting transformers or capacitors, medium-viscosity silicone fluids can fill the gaps between coils, forming a continuous insulating layer that helps improve voltage resistance. When used in conformal coatings for circuit boards, they offer a balance of flow and coverage, making them suitable for humid and corrosive environments, such as marine or chemical applications.

In industrial lubrication, it is suitable for general bearing or gear lubrication, forming an oil film that withstands moderate loads and significantly reduces wear. In pipe joints or valve sealing applications, its strong adhesion fills tiny gaps between sealing surfaces, effectively preventing leakage.

Summary of Selection Recommendations
In consumer and light industrial applications,

low-viscosity silicone oils are more suitable for applications requiring fast spreading and a light feel, such as skincare, cosmetics, electronic component potting, and textile softening.

Medium-viscosity silicone oils are more suitable for applications requiring moderate lubrication and long-lasting protection, such as high-end daily chemical products, electronic and electrical protection, and general industrial lubrication.

When selecting a silicone oil, it is recommended to prioritize flowability or functionality based on the specific application requirements to ensure maximum performance.