Also known as: 1, 3-Butylene Glycol
Cosmetic function: Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling
EWG hazard reflects the rating of the ingredient, not the real-world risk of a finished product — hazard depends on concentration. How we read these.
Good: Powerfully moisturizing
Data is aggregated from EWG, CIR, CosIng and the SkinCarisma community, and improves over time. Spot something off? See our methodology. This is general information, not medical advice.