Isopropyl Isostearate

Isopropyl Isostearate is a synthetic ester derived from isostearic acid and isopropyl alcohol. It functions as an emollient, helping to soften and smooth the skin by forming a protective film. This ingredient also provides a non-greasy feel and aids in the spreadability of cosmetic formulations.

BenefitMinimal 0.8 / 4

Hydration i0.5 / 4

Whether the ingredient helps increase the skin’s water content — humectants that attract water, ingredients that reduce water loss, or ones that make skin feel less dry.

Texture i0.5 / 4

Whether it can improve smoothness and surface texture — roughness, flaking, clogged pores, or unevenness. Exfoliating acids, retinoids, and smoothing moisturizers may score here.

Barrier support i0.5 / 4

Whether it supports the skin barrier — restoring lipids, reducing water loss, aiding barrier repair, or strengthening the skin’s protective function.

RiskLow 1 / 4

Acne aggravation i2 / 4

Whether it may worsen breakouts — clogging pores, feeling heavy on acne-prone skin, or triggering comedones in some users.

Irritation i0.5 / 4

Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.

Sensitization i0.5 / 4

Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

• skin conditioning
• improves product spreadability
• non-greasy feel

Things to watch

• potential for acne aggravation

Products with Isopropyl Isostearate

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Frequently asked questions

What is Isopropyl Isostearate used for in skincare?

Isopropyl Isostearate is primarily used as an emollient to soften and smooth the skin. It also helps improve the texture and spreadability of cosmetic products, giving them a lighter, non-greasy feel.

Is Isopropyl Isostearate suitable for acne-prone skin?

While generally considered safe, Isopropyl Isostearate has a moderate comedogenic rating, meaning it may potentially clog pores and contribute to acne for some individuals, especially those with acne-prone skin.