Common Name(s): Peg/ppg-27/27 dimethicone,peg/ppg-27/27 dimethicone,silicone peg/ppg emulsifier

DESCRIPTION

What It Does: Helps silicone and water blend together smoothly for a light, non-greasy skin feel.

Why It's Used: Peg-27/ppg-27 balance (hlb ~10) enables stable w/si emulsification with excellent skin feel.

How It Works: Peg-27 arms are hydrophilic; ppg-27 arms provide intermediate polarity; dimethicone backbone anchors in silicone phase; hlb ~10 enables w/si emulsification.

Typically Found In: Water-in-silicone emulsions,lightweight sunscreens,silicone skin care,primers

TECHNICAL DETAILS

Primary Category: Functional ingredient – emulsifier

Secondary Functions: Skin conditioning,emollient,silicone-phase emulsification

Application Areas:

Typical Concentration Range: 0.5%–5%

SOURCING & ETHICS

Vegan Status: Conditional - supplier confirmation required

Halal Status: Yes

Source Notes: Silicone-based; synthetic; peg/ppg from petrochemical. [audit 2026-07-29 rev2: status downgraded on audit. determination requires shariah-panel sign-off.]

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 1/5 – low

Sensitivity Concerns: Generally well tolerated. silicone-derived; inert.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

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

Works Well With: Cyclopentasiloxane,dimethicone,organic emollients,sunscreen actives

Avoid Combining With: Incompatible with highly ionic aqueous systems

SCIENTIFIC NOTE

High molecular weight balanced (27:27 ratio); similar hlb ~10 to 25/25 but higher mw provides more stable emulsions.

Last Verified: 2026-03-27

Primary Sources: Cosing database,shin-etsu/evonik technical data,inci dictionary