Isocetyl Stearoyl Stearate
A rich emollient ester. It softens skin and gives a rich texture and shine. Well tolerated.
Evidence by route
Topical application
A functional emollient. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Isocetyl Stearoyl Stearate is a branched ester of fatty acids and isocetyl alcohol. INCI: Isocetyl Stearoyl Stearate. In a formula it works as a rich emollient: it softens skin, gives creams a firm enveloping texture, and improves pigment spread in color cosmetics. It is a functional sensory component, not a skincare active. Its branched structure makes it oxidation-stable. Pregnancy safety. Systemic absorption through intact skin is low and there is no evidence of harm. It can be used during pregnancy and lactation. Tolerance. Irritation and allergen potential are low, but rich emollients are introduced more cautiously on very oily, acne-prone skin.
Frequently asked questions
Is Isocetyl Stearoyl Stearate safe during pregnancy?
Isocetyl Stearoyl Stearate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Isocetyl Stearoyl Stearate for?
Isocetyl Stearoyl Stearate suits: normal, dry, combination, oily, sensitive.
What is Isocetyl Stearoyl Stearate and what does it do in cosmetics?
A rich emollient ester.
Is Isocetyl Stearoyl Stearate comedogenic?
On the Fulton scale 2/5 – low comedogenicity. For acne-prone skin, a rating of 3 or higher suggests choosing an alternative.
What's the INCI name for Isocetyl Stearoyl Stearate?
The INCI name is Isocetyl Stearoyl Stearate.
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