Technical Library

SiQubeTM Q1850; INCI name: Polysilsesquioxane Steardimonium Chloride

SiQubeTM Q1850 is a polymeric silicone that provides preserving and cleansing benefits for use in personal care applications and formulations.

SiQubeTM Q1850 Benefits:

  • Solid, dry powder
  • Polymeric silicone
  • VOC free
  • Stable in aqueous solutions up to 3 wt% (also available as a solution in water SiQubeTM Q1851)

SiQubeTM Q1850 Applications (for use in skin care and hair care):

  • Powerful cleansing and debriding ability
  • Improves skin barrier function
  • Improves skin affinity and adhesion
  • Firms skin
  • Natural, smooth skin feel
  • Non-tacky and soft touch
  • Light and non-greasy emollient
  • Increased moisture binding capacity
  • Antistatic for smooth, shiny hair
  • Long-lasting odor elimination
  • Unusual combination of light, dry feel with substantivity

Quaternary Silsesquioxane Solubility

S = Soluble
I = Insoluble
PS = Partially Soluble

WaterS (up to 3 wt%)
Vitamin ES
Castor OilS (hot)
OctyldodecanolS (hot)
Stearyl MethiconePS (hot)
Ethylhexyl PalmitateI
10% Microcrystalline WaxI

Body Wash with SiBrid® Diethicone DE-12 and SiQube® Polysilsesquioxane Steardimonium Chloride Q1850

Add SiBrid® Diethicone DE-12 to cleansers to produce a silky and hydrated after-feel in products that strip the skin of natural oils. In body washes, SiQube® Polysilsesquioxane Steardimonium Chloride Q1850 acts as a conditioning agent that leaves a smooth feel on skin without the need to incorporate a large oil phase into the formula.

INCI NameIngredient SupplierWeight %
Phase A
WaterDeionized Water--q.s.
Acrylates CopolymerCarbopol® Water SF1Lubrizol8.50
Sodium Lauryl SulfateStepanol® WA-EXTRAStepan30.00
Sodium Hydroxide----q.s.
Cocamidopropyl BetaineMirataine® BET C30Solvay10.00
Phase B
Polysilsesquioxane Steardimonium ChlorideSiQube® Polysilsesquioxane Steardimonium Chloride Q1850Gelest0.25
Phase C
Helianthus annuus (Sunflower) Seed OilSunflower Oil--2.00
PolydiethylsiloxaneSiBrid® Diethicone DE-12Gelest1.00
Phase D
Citric Acid----q.s.
Sodium Chloride----q.s.

  • Mix water and copolymer under propeller blade until dispersed.

  • Add SLS and mix slowly until dispersed.

  • Adjust pH to 6.5-6.8 to thicken.

  • Add cocamidopropyl betaine and mix slowly.

  • Predisperse Phase B using shear. Add to Phase A and continue mixing.

  • Add Phase C to Phase AB and mix well.

  • In order, add Phase D ingredients and adjust pH to 5.5, if needed.

  • Add sodium chloride to thicken batch and mix well.
  • See in Formulary.