Common Name(s): Hydroxypropyl dimethicone stearate,hydroxypropyl dimethicone stearate,cosmetic functional ingredient,established active

CAS Number: N/a

DESCRIPTION

What It Does: Delivers silicone or specialty conditioning from the si-o backbone's low surface energy and molecular flexibility.

Why It's Used: Hydroxypropyl dimethicone stearate 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 hydroxypropyl dimethicone stearate from other silicone grades.

How It Works: Si-o backbone: surface energy 20-25 mn/m; near-zero rotational barrier → dry non-tacky 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 - feedstock declaration required

Halal Status: Unverified - feedstock declaration required (plant, animal and petrochemical routes all exist)

Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier. [audit 2026-07-29 rev2: origin-dependent: the same inci exists in plant, animal and petrochemical versions and the name does not discriminate. 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,hydroxypropyl dimethicone stearate technical review