Common Name(s): Polysilicone-17,polysilicone-17,cosmetic functional ingredient,established active

CAS Number: N/a

DESCRIPTION

What It Does: Delivers specialty silicone or fluorinated conditioning from low surface energy and molecular flexibility providing unique cosmetic performance.

Why It's Used: Polysilicone-17 is selected for the specific si-o substitution pattern of its siloxane backbone — the methyl, alkyl, or functional group arrangement determines the unique combination of surface energy, volatility, and spreading that distinguishes polysilicone-17 from other silicone grades.

How It Works: Si-o backbone or c-f bonds provide ultra-low surface energy (10-20 mn/m); molecular rigidity or flexibility tuned by substitution pattern for targeted skin feel.

Typically Found In: Cosmetic formulations

TECHNICAL DETAILS

Primary Category: Active ingredient – cosmetic active

Secondary Functions: Skin conditioning

Application Areas:

Typical Concentration Range: 0.1%–10%

SOURCING & ETHICS

Vegan Status: Conditional - supplier confirmation required

Halal Status: Unverified - supplier confirmation required

Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier. [audit 2026-07-29 rev2: the record's own source_notes does not assert a non-animal origin, or instructs the reader to verify with the supplier; "yes" asserts knowledge the record does not hold. determination requires shariah-panel sign-off.]

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Well-tolerated by most skin types.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Good safety profile at recommended concentrations. ewg score: 1–2.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Safety documented in cosing at standard formulation concentrations.

Last Verified: 2026-03-22

Primary Sources: Cosing database,polysilicone-17 technical review