Glyceryl Hydroxystearate

AKA: Octadecanoic acid, Monoester with 1, 2, 3-propanetriol, 1323-42-8, Stearic acid, Monoester with glycerol, Hydroxyoctadecanoic acid, Hydroxystearic acid, Glyceryl monohydroxy stearate
Plant-Derived
Emollient
Cleanser
Emulsifier
Skin Conditioner
Plant Oil
Not Clean
Hydroxyoctadecanoic acid, monoester with glycerol
Formula
C21H42O5
Mol. Weight
374.60
CAS #
1323-42-8
Form
Wax
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Locks In Moisture
Traditional Use
Synthetic ester developed as a skin conditioning and emulsifying agent. Created to provide both hydrophobic and hydrophilic properties in cosmetic formulations.
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing
🛡️Safety-assessed4 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR