Dimethicone 1000
Price range: $9.00 through $48.00 USD
INCI: Dimethicone
CAS: 9006-65-9
Viscosity: 1000 centistokes (cSt)
Chemical Class: Polydimethylsiloxane (PDMS)
Origin: Silica-derived (sand & quartz)
Cosmetic Benefits
Enhances slip, glide, and spreadability
Reduces tackiness and drag in high-humectant or high-active formulas
Forms a smooth, breathable surface film on skin and hair
Improves skin softness and cosmetic elegance
Enhances hair conditioning, shine, and manageability
Helps reduce whitening during rub-in of creams and lotions
Supports uniform pigment dispersion in color cosmetics
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Formulation Notes
Oil-soluble, insoluble in water
Compatible with cosmetic oils, esters, waxes, and silicone systems
Typically incorporated into the oil phase or added during cool-down, depending on formulation design and processing method
Usage levels vary depending on product type, desired sensory profile, and overall formulation architecture
👉 Optimize inclusion through bench testing, stability testing, and sensory evaluation.
Dimethicone 1000 vs. Alt. Grades
Compared to lower-viscosity dimethicone grades, Dimethicone 1000 cSt provides:
Increased cushion and richness
More substantive conditioning on skin and hair
Enhanced film integrity and barrier support
Improved gloss, slip, and payoff in makeup formulations
This makes dimethicone 1000 cSt particularly well suited for richer emulsions, primers, barrier creams, and intensive skin or hair treatments.
Applications
Creams and lotions
Barrier-support and skin-comfort formulations
Hair conditioners, masks, and smoothing treatments
Serums and emulsions requiring enhanced body
Makeup, primers, foundations, and lip products
Anti-chafing and comfort-focused cosmetic products
Regulatory & Labeling
Reviewed by the Cosmetic Ingredient Review (CIR) and considered safe as used within established cosmetic parameters
Dimethicone is also recognized under the FDA Tentative Final Monograph for OTC Skin Protectants; however, when no drug claims are made, it may be used and labeled as a cosmetic ingredient
Declare on ingredient labels in descending order of concentration
For external cosmetic use only
Formulators should follow CIR cosmetic guidance unless intentionally developing an OTC drug product.
Formulator Insight
High-viscosity dimethicone grades such as 1000 cSt are frequently used to refine texture and correct skin feel, particularly in formulations where actives, humectants, or pigments negatively impact sensory performance. Its stability and compatibility make it a dependable tool in professional cosmetic development.
Dimethicone (1000 cSt) is a high-viscosity, cosmetic-grade silicone fluid widely used in professional skin care, hair care, and color cosmetic formulation. As a polydimethylsiloxane (PDMS), this grade is selected for its substantive feel, film-forming properties, and ability to improve sensory performance without interfering with formulation stability.
High-viscosity dimethicone grades such as 1000 cSt are commonly used when enhanced cushion, glide, conditioning, and surface smoothness are required in finished cosmetic products.
Documents
INCI: Dimethicone
CAS: 9006-65-9
Viscosity: 1000 centistokes (cSt)
Chemical Class: Polydimethylsiloxane (PDMS)
Origin: Silica-derived (sand & quartz)
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