C
Propylene Glycol
Propylene Glycol
This letter is an internal editorial classification of the ingredient, not a clinical evidence rating. It does not certify safety, suitability for your skin or the SPF of a finished product.
humectant
A synthetic humectant and penetration enhancer. Effective but can irritate sensitive skin. Being replaced by propanediol (plant-derived alternative) in many modern formulations.
Benefits
Humectant, penetration enhancer, preservative booster
Risks & concerns
Can irritate sensitive skin. Mild allergen for some (rare). Being phased out in favour of propanediol.
Best for
Normal skinOily skinCombination skin
Avoid if
Sensitive skin
Technical details
- INCI name
- Propylene Glycol
- CAS Number
- 57-55-6
- Category
- humectant
- Comedogenic rating
- 0/5