Cholesteryl Stearate

What is Cholesteryl Stearate?

Cholesteryl stearate is a synthetic lipid ester derived from cholesterol, a key component of human skin lipids, and stearic acid, a common saturated fatty acid. It appears in various cosmetic products such as creams, lotions, lipsticks, and foundations. Functionally, it integrates into formulations to replicate skin's natural lipid structure, promoting softness and smoothness on the skin surface. As a skin conditioner and emollient, it fills in minor irregularities for a supple feel. It also modifies viscosity for optimal spreadability and texture, while its emulsifying properties help blend oil and water phases into stable mixtures. Additionally, it can form organized liquid crystal phases that enhance product consistency and mimic the skin barrier.

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

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
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.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Benefits

Provides emollient effects to soften and smooth skin texture.

Acts as a viscosity controller for better product spreadability and stability.

Supports emulsification for consistent lotions and creams.

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 with dry or rough skin seeking conditioning agents.
Those with rare allergies to cholesterol derivatives.
Users of emulsion-based products like moisturizers.
Individuals sensitive to fatty acid esters.
People looking for non-comedogenic emollients in daily routines.
People preferring fully plant-based ingredients.

Safety Notes

  • Rated low hazard by safety assessments for cosmetic use.
  • Non-comedogenic with minimal irritation potential.

Frequently Asked Questions about Cholesteryl Stearate

What is cholesteryl stearate used for in cosmetics?

It conditions skin, controls thickness, acts as an emollient, and emulsifies products.

Is cholesteryl stearate safe for sensitive skin?

It shows low irritation potential and is deemed safe in cosmetic concentrations.

Does it cause breakouts?

No, it has a comedogenic rating of 0.