Cetyl Stearate

What is Cetyl Stearate?

Cetyl Stearate is a waxy ester formed from stearic acid, a saturated fatty acid from plant and animal sources, and cetyl alcohol, a long-chain fatty alcohol. Primarily used in the emollient class of cosmetic ingredients, it appears in moisturizers, lotions, creams, and makeup products. In formulations, it works by creating a lightweight barrier on the skin to reduce water evaporation, while softening rough textures and improving slip for easier application. This promotes skin suppleness and flexibility without a heavy residue. Its stability allows blending into emulsions and anhydrous products, where it also boosts viscosity and opacity. Derived synthetically for purity, it suits a range of textures from lightweight serums to rich balms, supporting overall product performance.

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.
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

Softens and smooths skin by filling surface irregularities.

Maintains skin flexibility and comfort.

Helps minimize moisture loss in formulations with barriers.

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 softness.
Those with rare allergies to fatty acid esters.
Individuals preferring non-comedogenic moisturizers.
People experiencing reactions to similar emollients.
Users of sensitive skin products needing gentle conditioning.
Individuals sensitive to stearic acid derivatives.

Safety Notes

  • Considered safe for cosmetic use by regulatory reviews.
  • Low hazard rating with minimal irritation reports.

Frequently Asked Questions about Cetyl Stearate

What is Cetyl Stearate?

A synthetic ester of stearic acid and cetyl alcohol used as an emollient to soften skin and improve product texture.

Is Cetyl Stearate comedogenic?

No, it has a comedogenic rating of 0, making it unlikely to clog pores.

Safe for sensitive skin?

Yes, it has low irritation potential and is deemed safe in cosmetics.