Dimethiconol Stearate

What is Dimethiconol Stearate?

Dimethiconol Stearate is a synthetic compound formed by esterifying dimethiconol—a hydroxyl-terminated polydimethylsiloxane silicone polymer—with stearic acid, a fatty acid. This creates an oil-dispersible ingredient ideal for cosmetic formulations. Commonly found in leave-on skincare like moisturizers, serums, and foundations, as well as hair conditioners, it acts by depositing a thin, flexible film on the skin or hair. This film enhances slip for easy application, fills minor surface irregularities for a smoother appearance, and provides light occlusion to slow transepidermal water loss. Its non-volatile, stable nature ensures long-lasting sensory benefits, such as silkiness and reduced tackiness, making it valuable in products aiming for luxurious texture without heaviness or residue.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
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.

Benefits

Promotes skin softness and flexibility through conditioning action.

Smooths surface roughness for a refined feel.

Supports moisture retention when combined with other ingredients.

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 flaky skin needing lightweight conditioning.
Persons with rare silicone sensitivities.
Individuals seeking improved product glide and silky finish.
Individuals preferring fully natural or silicone-free routines.
Those using daily moisturizers or hair products for comfort.
People experiencing reactions to emollient esters.

Safety Notes

  • Rated low hazard overall with minimal concerns.
  • Non-comedogenic profile supports use on acne-prone skin.

Frequently Asked Questions about Dimethiconol Stearate

Is Dimethiconol Stearate comedogenic?

No, it carries a comedogenic rating of 0, making it suitable for pore-conscious routines.

What is its main function in products?

Serves as a skin conditioning agent and emollient to soften, smooth, and help retain moisture.

Is it safe for sensitive skin?

Generally low irritation potential; suitable for most, but patch test if sensitivities exist.