Bis-PEG/PPG-20/20 Dimethicone

What is Bis-PEG/PPG-20/20 Dimethicone?

Bis-PEG/PPG-20/20 Dimethicone is a synthetic silicone-based polymer derived from dimethicone, a polydimethylsiloxane backbone, modified by attaching hydrophilic polyethylene glycol (PEG-20) and polypropylene glycol (PPG-20) side chains. This structure creates an amphiphilic molecule capable of interacting with both water and oil phases. Commonly found in leave-on skincare like moisturizers, sunscreens, and hair conditioners, as well as rinse-off products such as shampoos and body washes. It functions by reducing surface tension to aid dispersion of silicones in aqueous systems, forming stable water-in-silicone or silicone-in-water emulsions. The PEG/PPG chains enhance solubility and spreadability, while the silicone core delivers a lightweight, non-greasy feel, improving product texture and application ease without heavy occlusion.

Comedogenic Rating 0/5 Low risk of clogging pores

EWG Safety Rating 3 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Emollient

Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.

Surfactant

Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Emulsifying agent

Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Skin conditioning agent

Maintains skin softness, smoothness, and flexibility.

Benefits

Softens and smooths skin surface for a silky feel.

Stabilizes oil-water mixtures in lotions and cleansers for even consistency.

Enhances skin and hair conditioning by maintaining flexibility and moisture retention.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit	Who Should Avoid
People with dry or rough skin seeking lightweight hydration.	Individuals sensitive to silicone derivatives.
Users of emulsion-based products like creams and shampoos for better texture.	People with rare allergies to PEG or PPG compounds.
Those preferring non-greasy formulas with improved spreadability.	Those preferring completely silicone-free skincare routines.

Safety Notes

Rated moderate concern by EWG due to potential contamination risks in PEG compounds.
Non-comedogenic with low pore-clogging potential.

Frequently Asked Questions about Bis-PEG/PPG-20/20 Dimethicone

What does Bis-PEG/PPG-20/20 Dimethicone do in products?

It acts as an emollient to soften skin, emulsifier to blend phases, and conditioner for smoothness.

Is it safe for daily use?

Generally recognized as safe in cosmetics with moderate EWG rating and low comedogenic risk.

Does it clog pores?

No, it has a comedogenic rating of zero.