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BRB CM 45-S is a clear fluid of low viscosity and high volatility blend of cyclosiloxanes. This blend of Cyclotetrasiloxane (known as D4) and Cyclopentasiloxane (known as D5) is a base fluid in various personal care products because of its unique sensory and volatility characteristics.

INCI Name: Cyclotetrasiloxane

Functions: Carrier

Labeling Claims: Ulta Beauty's Conscious Beauty

Synonyms: 1,3,5,7,2,4,6,8-tetroxatetrasilicocane

Technical Data Sheet

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Identification & Functionality

Cosmetic Ingredients Functions
CAS No.
293-51-6
EC No.
209-136-7

Features & Benefits

Product Features
  • Volatile carrier
  • Low surface tension and viscosity
  • Compatible with a wide range of cosmetic ingredients
Product Benefits
  • Imparts soft silky feel to the skin
  • Excellent spreading
  • Leaves no oily residue or build-up and an excellent dry non-greasy feel

Applications & Uses

AP/Deo Applications
Skin Care Applications
Recommended Uses

BRB CM 45-S is used as volatile carrier in Antiperspirants/deodorants, hair care formulations, skin care creams and lotions as well as in make-up products. The Cyclotetrasiloxane evaporates at a faster rate than the Cyclopentasiloxane, giving a different balance between volatility and spreading compared to straight Cyclopentasiloxane.

Usage Guidelines

BRB CM 45-S may be used alone or blended with other cosmetic fluids to provide a fluid base for a variety of cosmetic ingredients. It features good solubility in most anhydrous alcohols and in many cosmetic solvents. BRB CM 45-S should be stored at 5°C above its freeze point. If the material does freeze on no account should a naked flame be used to melt the product.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Cyclotetrasiloxane (D4) Contentmax. 75%
Freeze Pointmax. 10°C
Viscosity (25°C)2.7mm2 /s