Researched by Helena DeMaria-Williams
Formula IngredientSolventHexylene Glycol
INCI: Hexylene Glycol
Hexylene glycol (2-methylpentane-2,4-diol) is a multi-functional helper ingredient used primarily as a solvent to thin out thick formulations and improve product spreadability. It also enhances the efficacy of preservative systems — notably in blends like Lexgard HPO where it boosts phenoxyethanol performance — and functions as a mild surfactant and emulsifier.
Category
Solvent
Irritation Risk
Low
Skin Types
all skin types
What does this do in a formula?
solvent, improves texture and spreadability, preservative booster, emulsifying
Is Hexylene Glycol safe? Key considerations
Can Hexylene Glycol cause irritation?
Low RiskINCIDecoder irritancy rating of 0–1. Generally well tolerated at typical cosmetic concentrations. EU CosIng lists it without Annex restrictions. At high concentrations it may cause mild irritation in very sensitive individuals.
Does Hexylene Glycol increase sun sensitivity?
No RiskDoes not increase photosensitivity. No sun protection precautions required.
Is Hexylene Glycol safe during pregnancy?
SafeNo known reproductive or developmental concerns for topical cosmetic use at standard concentrations.
How does Hexylene Glycol work?
Hexylene glycol (2-methylpentane-2,4-diol) is a multi-functional helper ingredient used primarily as a solvent to thin out thick formulations and improve product spreadability. It also enhances the efficacy of preservative systems — notably in blends like Lexgard HPO where it boosts phenoxyethanol performance — and functions as a mild surfactant and emulsifier.
Which products contain Hexylene Glycol?
Shop products that contain Hexylene Glycol
Polyglutamic Acid Serum
Gentle Clear Clarifying Cream Cleanser
Hyaluronic Acid 2% + B5 (with Ceramides)
Glycolic Acid 7% Exfoliating Toner
Marine Hyaluronics
