Propanediol is a versatile ingredient often derived from corn sugar, serving multiple roles in cosmetic formulations. It acts as a solvent, helping to dissolve other ingredients and improve their delivery into the skin. It also functions as a humectant, attracting and retaining moisture, and can provide a smooth, non-sticky feel as an emollient. It is generally well-tolerated and considered a good alternative to propylene glycol.
NoneSolvent, humectant, emollientVeganEvidence: High
BenefitModerate 1.5 / 4
Hydration
Barrier support
RiskLow 0.5 / 4
Irritation
Sensitization
Rated by SpottyLabs' ingredient methodology, independent of brands.
What it helps with
improves ingredient absorption
hydrates skin
enhances product texture
Things to watch
rare cases of irritation or sensitization
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Propanediol is used as a solvent to help other ingredients penetrate the skin, as a humectant to draw moisture into the skin, and as an emollient to soften and smooth the skin's surface.
Is propanediol safe for sensitive skin?
Propanediol is generally considered safe and well-tolerated, even for sensitive skin. However, as with any ingredient, rare individual sensitivities can occur.
Spotty Labs