Cyclo-1400 Cyclomethicone (d4 & d5)/Dimethicone Blend

Cyclo-1400 is a formulation of high viscosity Dimethiconol that is dispersed in a d4/d5 Cyclomethicone fluid. Cyclo-1400-DM is a formulation of high viscosity Dimethicone that is dispersed in a D5 Cyclomethicone.

Both of these fluids are widely used in hair care formulations and other personal care products doe to their soft feel & water-repellency.

INCI Names: Cyclopentasiloxane/Cylotetrasiloxane & Dimethiconol

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Availability: 1-gallon pail, 5-gallon pail & 55-gallon drums

Product Equivalent: Dow Corning® 1401 Fluid, DC 1401®

Product Data:

Chemical Name Silicone Fluid
Formula Dimethiconol in blend of d4/d5 Cyclomethicone
Appearance Clear-viscous liquid
Specific gravity @25°C 0.96
Viscosity at 25 at 25°C 4,000 – 7,000 cP
Freezing point -18°C
Refractive index 1.39 to 1.40
Non-volatile content 15%
Flash Point > 50°C

Use: Cyclo-1400 is a blend of cyclomethicone and dimethiconol. It consists of a 13% solution of an ultra-high viscosity dimethiconol in a blend of cyclotetrasiloxane and cycolpentasilxoane (D4 & D5). The fluid blend provides soft feel, spreadability and substantivity. It is widely used in hair care formulations to provide a soft-silky feel and to protect against split ends.

It can be readily emulsified or combined with volatile silicone, mineral oil and cosmetic esters to provide a delivery vehicle for active ingredients such as sun screens, skin care products & hair conditioners.


  • Soft velvet feel
  • Excellent film forming
  • Long lasting
  • Excellent conditioning
  • Volatility
  • Cyclomethicones evaporate readily without a residue or cooling sensation
  • Conditions hair – especially split ends
  • High viscosity Dimethiconol dispersed in d4/d5 cyclomethicone
  • Provides water-repellent film in sunscreens, emollients & moisturizers