PEG-17 Dimethicone

PEG / Ethoxylated

What is PEG-17 Dimethicone?

PEG-17 Dimethicone is a synthetic silicone polymer derived from dimethicone (polydimethylsiloxane) modified by grafting 17 units of polyethylene glycol (PEG). This ethoxylation introduces hydrophilic properties, making it more water-dispersible than standard silicones. Primarily used in hair care products like conditioners and shampoos, as well as skin lotions and creams, it functions as a conditioning agent by forming a lightweight, non-greasy film on surfaces. This film lowers surface friction, enhancing slip and reducing static electricity on hair shafts. On skin, it acts as an emollient, helping to lock in moisture and improve texture without heavy occlusion. Its dual solubility allows better formulation in water-based products, contributing to even application and quick absorption.

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:

Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Improves hair softness, shine, and ease of combing by reducing friction.

Maintains skin smoothness and flexibility as a conditioning emollient.

Non-comedogenic, suitable for formulations targeting clear pores.

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 frizzy hair seeking better manageability.
Those sensitive to PEG or ethoxylated compounds.
Individuals with normal to dry skin needing lightweight moisture.
People preferring silicone-free or natural-only routines.
Users of styling products wanting reduced static and tangles.
Individuals concerned about potential impurities in ethoxylates.

Safety Notes

  • Rated moderate hazard by EWG due to ethoxylation process.
  • Deemed safe for cosmetic use by ingredient review panels as typically formulated.

Frequently Asked Questions about PEG-17 Dimethicone

What does PEG-17 Dimethicone do in products?

It conditions hair and skin by forming a smooth film that reduces friction and enhances texture.

Is PEG-17 Dimethicone safe for daily use?

It is generally considered safe in cosmetics per expert reviews, with moderate EWG rating.

Can it be used on acne-prone skin?

Yes, its non-comedogenic nature makes it unlikely to clog pores.