PEG-7 Dimethicone

PEG / Ethoxylated

What is PEG-7 Dimethicone?

PEG-7 Dimethicone is a synthetic polymer derived from dimethicone, a common silicone, chemically modified by attaching short polyethylene glycol (PEG-7) chains. This modification enhances its water solubility and compatibility with water-based formulations. Primarily found in hair care products like shampoos and conditioners, as well as skin moisturizers, sunscreens, and makeup, it works by spreading evenly to create a thin, flexible film on the skin or hair surface. This film reduces friction, imparts a silky texture, improves product glide, and helps lock in moisture while allowing breathability. Its emulsifying properties also stabilize mixtures of oils and water in creams and lotions, contributing to a non-greasy finish and better overall product performance.

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:

Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
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

Delivers a smooth, velvety feel to skin and hair by reducing surface friction.

Boosts shine and manageability in hair styling and conditioning products.

Forms a protective film that enhances water resistance and product longevity on skin.

Who It's For

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

Who May Benefit Who Should Avoid
Individuals seeking improved hair softness and detangling.
Those with known sensitivity to silicone derivatives.
People with normal to dry skin wanting lightweight hydration.
People preferring silicone-free or PEG-free formulations.
Users of sunscreens or makeup for better wear and finish.
Individuals experiencing irritation from ethoxylated ingredients.

Safety Notes

  • Assessed as safe for use in cosmetics by the Cosmetic Ingredient Review when properly formulated.
  • Low comedogenic potential, unlikely to clog pores.

Frequently Asked Questions about PEG-7 Dimethicone

What does PEG-7 Dimethicone do in products?

It conditions skin and hair, forms films for smoothness, and aids emulsification for better texture.

Is PEG-7 Dimethicone safe for sensitive skin?

Generally low irritation potential per safety reviews, but patch test if sensitive to silicones.

Does it cause breakouts?

Rated non-comedogenic, suitable for acne-prone skin based on available data.