Isostearyl Alcohol
AKA “16-Methylheptadecan-1-ol, 16-methylheptadecanol, 1-Heptadecanol, Isostearyl Alcohol EX, RefChem:1087832
Synthetic
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Ingredient Facts
Isostearyl alcohol
AKA: 16-Methylheptadecan-1-ol, 16-methylheptadecanol, 1-Heptadecanol, Isostearyl Alcohol EX, RefChem:1087832
Synthetic · Skin Conditioning - Emollient | Viscosity Controlling · EWG: 4
Synthetic
Emollient
Skin Conditioner
Plant Oil
Synthetic
Clean
A lightweight emollient that softens and smooths skin while helping maintain the product's texture and consistency.
Formula
C18H38O
Mol. Weight
270.50
CAS #
27458-93-1
Form
Liquid
State
Liquid
Synthetic
Botanical. Native to USA. Derived from coconut, palm kernel, or soybean oils as the primary botanical starting materials. Produced through catalytic hydrogenation of natural fatty alcohols to increase stability and consistency.
Function
Skin Conditioning - Emollient | Viscosity Controlling
Benefits
Locks In Moisture
Traditional Use
Developed as a synthetic fatty alcohol derived from isostearic acid in the mid-20th century. Created to provide thickening, emulsifying, and conditioning properties in cosmetic formulations.
Skin Types
all-skin-types
Best For
Target
Dryness
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Phototoxicity Concern
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR